3 * Text-mode variant of Wireshark, along the lines of tcpdump and snoop,
4 * by Gilbert Ramirez <gram@alumni.rice.edu> and Guy Harris <guy@alum.mit.edu>.
6 * Wireshark - Network traffic analyzer
7 * By Gerald Combs <gerald@wireshark.org>
8 * Copyright 1998 Gerald Combs
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version 2
13 * of the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
51 #ifdef HAVE_SYS_STAT_H
52 # include <sys/stat.h>
56 #include <zlib.h> /* to get the libz version number */
60 # include <sys/capability.h>
63 #ifndef HAVE_GETOPT_LONG
64 #include "wsutil/wsgetopt.h"
69 #include <epan/exceptions.h>
70 #include <epan/epan-int.h>
71 #include <epan/epan.h>
73 #include <wsutil/clopts_common.h>
74 #include <wsutil/cmdarg_err.h>
75 #include <wsutil/crash_info.h>
76 #include <wsutil/filesystem.h>
77 #include <wsutil/file_util.h>
78 #include <wsutil/privileges.h>
79 #include <wsutil/report_err.h>
80 #include <wsutil/ws_diag_control.h>
81 #include <wsutil/ws_version_info.h>
84 #include <epan/timestamp.h>
85 #include <epan/packet.h>
87 #include <epan/wslua/init_wslua.h>
90 #include "frame_tvbuff.h"
91 #include <epan/disabled_protos.h>
92 #include <epan/prefs.h>
93 #include <epan/column.h>
94 #include <epan/print.h>
95 #include <epan/addr_resolv.h>
97 #include "ui/capture_ui_utils.h"
100 #include "ui/ui_util.h"
101 #include "ui/cli/tshark-tap.h"
102 #include "register.h"
103 #include <epan/epan_dissect.h>
104 #include <epan/tap.h>
105 #include <epan/stat_tap_ui.h>
106 #include <epan/conversation_table.h>
107 #include <epan/srt_table.h>
108 #include <epan/rtd_table.h>
109 #include <epan/ex-opt.h>
111 #if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
112 #include <epan/asn1.h>
113 #include <epan/dissectors/packet-kerberos.h>
116 #include "capture_opts.h"
118 #include "caputils/capture-pcap-util.h"
121 #include "caputils/capture_ifinfo.h"
123 #include "caputils/capture-wpcap.h"
124 #include <wsutil/os_version_info.h>
125 #include <wsutil/unicode-utils.h>
127 #include <capchild/capture_session.h>
128 #include <capchild/capture_sync.h>
129 #endif /* HAVE_LIBPCAP */
131 #include <epan/funnel.h>
134 #include <wsutil/plugins.h>
139 #define tshark_debug0(str) g_warning(str)
140 #define tshark_debug1(str,p1) g_warning(str,p1)
141 #define tshark_debug2(str,p1,p2) g_warning(str,p1,p2)
142 #define tshark_debug3(str,p1,p2,p3) g_warning(str,p1,p2,p3)
144 #define tshark_debug0(str)
145 #define tshark_debug1(str,p1)
146 #define tshark_debug2(str,p1,p2)
147 #define tshark_debug3(str,p1,p2,p3)
152 * This is the template for the decode as option; it is shared between the
153 * various functions that output the usage for this parameter.
155 static const gchar decode_as_arg_template[] = "<layer_type>==<selector>,<decode_as_protocol>";
157 static guint32 cum_bytes;
158 static const frame_data *ref;
159 static frame_data ref_frame;
160 static frame_data *prev_dis;
161 static frame_data prev_dis_frame;
162 static frame_data *prev_cap;
163 static frame_data prev_cap_frame;
165 static const char* prev_display_dissector_name = NULL;
167 static gboolean perform_two_pass_analysis;
170 * The way the packet decode is to be written.
173 WRITE_TEXT, /* summary or detail text */
174 WRITE_XML, /* PDML or PSML */
175 WRITE_FIELDS /* User defined list of fields */
176 /* Add CSV and the like here */
179 static output_action_e output_action;
180 static gboolean do_dissection; /* TRUE if we have to dissect each packet */
181 static gboolean print_packet_info; /* TRUE if we're to print packet information */
182 static gint print_summary = -1; /* TRUE if we're to print packet summary information */
183 static gboolean print_details; /* TRUE if we're to print packet details information */
184 static gboolean print_hex; /* TRUE if we're to print hex/ascci information */
185 static gboolean line_buffered;
186 static gboolean really_quiet = FALSE;
188 static print_format_e print_format = PR_FMT_TEXT;
189 static print_stream_t *print_stream;
191 static output_fields_t* output_fields = NULL;
193 /* The line separator used between packets, changeable via the -S option */
194 static const char *separator = "";
198 * TRUE if we're to print packet counts to keep track of captured packets.
200 static gboolean print_packet_counts;
202 static capture_options global_capture_opts;
203 static capture_session global_capture_session;
206 static gboolean infodelay; /* if TRUE, don't print capture info in SIGINFO handler */
207 static gboolean infoprint; /* if TRUE, print capture info after clearing infodelay */
210 static gboolean capture(void);
211 static void report_counts(void);
213 static BOOL WINAPI capture_cleanup(DWORD);
215 static void capture_cleanup(int);
217 static void report_counts_siginfo(int);
221 #else /* HAVE_LIBPCAP */
223 static char *output_file_name;
225 #endif /* HAVE_LIBPCAP */
227 static int load_cap_file(capture_file *, char *, int, gboolean, int, gint64);
228 static gboolean process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset,
229 struct wtap_pkthdr *whdr, const guchar *pd,
231 static void show_capture_file_io_error(const char *, int, gboolean);
232 static void show_print_file_io_error(int err);
233 static gboolean write_preamble(capture_file *cf);
234 static gboolean print_packet(capture_file *cf, epan_dissect_t *edt);
235 static gboolean write_finale(void);
236 static const char *cf_open_error_message(int err, gchar *err_info,
237 gboolean for_writing, int file_type);
239 static void open_failure_message(const char *filename, int err,
240 gboolean for_writing);
241 static void failure_message(const char *msg_format, va_list ap);
242 static void read_failure_message(const char *filename, int err);
243 static void write_failure_message(const char *filename, int err);
244 static void failure_message_cont(const char *msg_format, va_list ap);
248 static GHashTable *output_only_tables = NULL;
251 const char *sstr; /* The short string */
252 const char *lstr; /* The long string */
256 string_compare(gconstpointer a, gconstpointer b)
258 return strcmp(((const struct string_elem *)a)->sstr,
259 ((const struct string_elem *)b)->sstr);
263 string_elem_print(gpointer data, gpointer not_used _U_)
265 fprintf(stderr, " %s - %s\n",
266 ((struct string_elem *)data)->sstr,
267 ((struct string_elem *)data)->lstr);
271 list_capture_types(void) {
273 struct string_elem *captypes;
276 captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
278 fprintf(stderr, "tshark: The available capture file types for the \"-F\" flag are:\n");
279 for (i = 0; i < WTAP_NUM_FILE_TYPES_SUBTYPES; i++) {
280 if (wtap_dump_can_open(i)) {
281 captypes[i].sstr = wtap_file_type_subtype_short_string(i);
282 captypes[i].lstr = wtap_file_type_subtype_string(i);
283 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
286 g_slist_foreach(list, string_elem_print, NULL);
292 list_read_capture_types(void) {
294 struct string_elem *captypes;
296 const char *magic = "Magic-value-based";
297 const char *heuristic = "Heuristics-based";
299 /* this is a hack, but WTAP_NUM_FILE_TYPES_SUBTYPES is always >= number of open routines so we're safe */
300 captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
302 fprintf(stderr, "tshark: The available read file types for the \"-X read_format:\" option are:\n");
303 for (i = 0; open_routines[i].name != NULL; i++) {
304 captypes[i].sstr = open_routines[i].name;
305 captypes[i].lstr = (open_routines[i].type == OPEN_INFO_MAGIC) ? magic : heuristic;
306 list = g_slist_insert_sorted(list, &captypes[i], string_compare);
308 g_slist_foreach(list, string_elem_print, NULL);
314 print_usage(FILE *output)
316 fprintf(output, "\n");
317 fprintf(output, "Usage: tshark [options] ...\n");
318 fprintf(output, "\n");
321 fprintf(output, "Capture interface:\n");
322 fprintf(output, " -i <interface> name or idx of interface (def: first non-loopback)\n");
323 fprintf(output, " -f <capture filter> packet filter in libpcap filter syntax\n");
324 fprintf(output, " -s <snaplen> packet snapshot length (def: 65535)\n");
325 fprintf(output, " -p don't capture in promiscuous mode\n");
326 #ifdef HAVE_PCAP_CREATE
327 fprintf(output, " -I capture in monitor mode, if available\n");
329 #ifdef CAN_SET_CAPTURE_BUFFER_SIZE
330 fprintf(output, " -B <buffer size> size of kernel buffer (def: %dMB)\n", DEFAULT_CAPTURE_BUFFER_SIZE);
332 fprintf(output, " -y <link type> link layer type (def: first appropriate)\n");
333 fprintf(output, " -D print list of interfaces and exit\n");
334 fprintf(output, " -L print list of link-layer types of iface and exit\n");
335 fprintf(output, "\n");
336 fprintf(output, "Capture stop conditions:\n");
337 fprintf(output, " -c <packet count> stop after n packets (def: infinite)\n");
338 fprintf(output, " -a <autostop cond.> ... duration:NUM - stop after NUM seconds\n");
339 fprintf(output, " filesize:NUM - stop this file after NUM KB\n");
340 fprintf(output, " files:NUM - stop after NUM files\n");
341 /*fprintf(output, "\n");*/
342 fprintf(output, "Capture output:\n");
343 fprintf(output, " -b <ringbuffer opt.> ... duration:NUM - switch to next file after NUM secs\n");
344 fprintf(output, " filesize:NUM - switch to next file after NUM KB\n");
345 fprintf(output, " files:NUM - ringbuffer: replace after NUM files\n");
346 #endif /* HAVE_LIBPCAP */
347 #ifdef HAVE_PCAP_REMOTE
348 fprintf(output, "RPCAP options:\n");
349 fprintf(output, " -A <user>:<password> use RPCAP password authentication\n");
351 /*fprintf(output, "\n");*/
352 fprintf(output, "Input file:\n");
353 fprintf(output, " -r <infile> set the filename to read from (- to read from stdin)\n");
355 fprintf(output, "\n");
356 fprintf(output, "Processing:\n");
357 fprintf(output, " -2 perform a two-pass analysis\n");
358 fprintf(output, " -R <read filter> packet Read filter in Wireshark display filter syntax\n");
359 fprintf(output, " -Y <display filter> packet displaY filter in Wireshark display filter\n");
360 fprintf(output, " syntax\n");
361 fprintf(output, " -n disable all name resolutions (def: all enabled)\n");
362 fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mnNtCd\"\n");
363 fprintf(output, " -d %s ...\n", decode_as_arg_template);
364 fprintf(output, " \"Decode As\", see the man page for details\n");
365 fprintf(output, " Example: tcp.port==8888,http\n");
366 fprintf(output, " -H <hosts file> read a list of entries from a hosts file, which will\n");
367 fprintf(output, " then be written to a capture file. (Implies -W n)\n");
368 fprintf(output, " --disable-protocol <proto_name>\n");
369 fprintf(output, " disable dissection of proto_name\n");
370 fprintf(output, " --enable-heuristic <short_name>\n");
371 fprintf(output, " enable dissection of heuristic protocol\n");
372 fprintf(output, " --disable-heuristic <short_name>\n");
373 fprintf(output, " disable dissection of heuristic protocol\n");
375 /*fprintf(output, "\n");*/
376 fprintf(output, "Output:\n");
377 fprintf(output, " -w <outfile|-> write packets to a pcap-format file named \"outfile\"\n");
378 fprintf(output, " (or to the standard output for \"-\")\n");
379 fprintf(output, " -C <config profile> start with specified configuration profile\n");
380 fprintf(output, " -F <output file type> set the output file type, default is pcapng\n");
381 fprintf(output, " an empty \"-F\" option will list the file types\n");
382 fprintf(output, " -V add output of packet tree (Packet Details)\n");
383 fprintf(output, " -O <protocols> Only show packet details of these protocols, comma\n");
384 fprintf(output, " separated\n");
385 fprintf(output, " -P print packet summary even when writing to a file\n");
386 fprintf(output, " -S <separator> the line separator to print between packets\n");
387 fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
388 fprintf(output, " -T pdml|ps|psml|text|fields\n");
389 fprintf(output, " format of text output (def: text)\n");
390 fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port,\n");
391 fprintf(output, " _ws.col.Info)\n");
392 fprintf(output, " this option can be repeated to print multiple fields\n");
393 fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
394 fprintf(output, " header=y|n switch headers on and off\n");
395 fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
396 fprintf(output, " occurrence=f|l|a print first, last or all occurrences of each field\n");
397 fprintf(output, " aggregator=,|/s|<char> select comma, space, printable character as\n");
398 fprintf(output, " aggregator\n");
399 fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
400 fprintf(output, " -t a|ad|d|dd|e|r|u|ud output format of time stamps (def: r: rel. to first)\n");
401 fprintf(output, " -u s|hms output format of seconds (def: s: seconds)\n");
402 fprintf(output, " -l flush standard output after each packet\n");
403 fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
404 fprintf(output, " -Q only log true errors to stderr (quieter than -q)\n");
405 fprintf(output, " -g enable group read access on the output file(s)\n");
406 fprintf(output, " -W n Save extra information in the file, if supported.\n");
407 fprintf(output, " n = write network address resolution information\n");
408 fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
409 fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
410 fprintf(output, " --capture-comment <comment>\n");
411 fprintf(output, " add a capture comment to the newly created\n");
412 fprintf(output, " output file (only for pcapng)\n");
414 fprintf(output, "\n");
415 fprintf(output, "Miscellaneous:\n");
416 fprintf(output, " -h display this help and exit\n");
417 fprintf(output, " -v display version info and exit\n");
418 fprintf(output, " -o <name>:<value> ... override preference setting\n");
419 fprintf(output, " -K <keytab> keytab file to use for kerberos decryption\n");
420 fprintf(output, " -G [report] dump one of several available reports and exit\n");
421 fprintf(output, " default report=\"fields\"\n");
422 fprintf(output, " use \"-G ?\" for more help\n");
424 fprintf(output, "\n");
425 fprintf(output, "WARNING: dumpcap will enable kernel BPF JIT compiler if available.\n");
426 fprintf(output, "You might want to reset it\n");
427 fprintf(output, "By doing \"echo 0 > /proc/sys/net/core/bpf_jit_enable\"\n");
428 fprintf(output, "\n");
434 glossary_option_help(void)
440 fprintf(output, "TShark (Wireshark) %s\n", get_ws_vcs_version_info());
442 fprintf(output, "\n");
443 fprintf(output, "Usage: tshark -G [report]\n");
444 fprintf(output, "\n");
445 fprintf(output, "Glossary table reports:\n");
446 fprintf(output, " -G column-formats dump column format codes and exit\n");
447 fprintf(output, " -G decodes dump \"layer type\"/\"decode as\" associations and exit\n");
448 fprintf(output, " -G dissector-tables dump dissector table names, types, and properties\n");
449 fprintf(output, " -G fields dump fields glossary and exit\n");
450 fprintf(output, " -G ftypes dump field type basic and descriptive names\n");
451 fprintf(output, " -G heuristic-decodes dump heuristic dissector tables\n");
452 fprintf(output, " -G plugins dump installed plugins and exit\n");
453 fprintf(output, " -G protocols dump protocols in registration database and exit\n");
454 fprintf(output, " -G values dump value, range, true/false strings and exit\n");
455 fprintf(output, "\n");
456 fprintf(output, "Preference reports:\n");
457 fprintf(output, " -G currentprefs dump current preferences and exit\n");
458 fprintf(output, " -G defaultprefs dump default preferences and exit\n");
459 fprintf(output, "\n");
463 * For a dissector table, print on the stream described by output,
464 * its short name (which is what's used in the "-d" option) and its
468 display_dissector_table_names(const char *table_name, const char *ui_name,
471 if ((prev_display_dissector_name == NULL) ||
472 (strcmp(prev_display_dissector_name, table_name) != 0)) {
473 fprintf((FILE *)output, "\t%s (%s)\n", table_name, ui_name);
474 prev_display_dissector_name = table_name;
479 * For a dissector handle, print on the stream described by output,
480 * the filter name (which is what's used in the "-d" option) and the full
481 * name for the protocol that corresponds to this handle.
484 display_dissector_names(const gchar *table _U_, gpointer handle, gpointer output)
487 const gchar *proto_filter_name;
488 const gchar *proto_ui_name;
490 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
492 if (proto_id != -1) {
493 proto_filter_name = proto_get_protocol_filter_name(proto_id);
494 proto_ui_name = proto_get_protocol_name(proto_id);
495 g_assert(proto_filter_name != NULL);
496 g_assert(proto_ui_name != NULL);
498 if ((prev_display_dissector_name == NULL) ||
499 (strcmp(prev_display_dissector_name, proto_filter_name) != 0)) {
500 fprintf((FILE *)output, "\t%s (%s)\n",
503 prev_display_dissector_name = proto_filter_name;
509 * The protocol_name_search structure is used by find_protocol_name_func()
510 * to pass parameters and store results
512 struct protocol_name_search{
513 gchar *searched_name; /* Protocol filter name we are looking for */
514 dissector_handle_t matched_handle; /* Handle for a dissector whose protocol has the specified filter name */
515 guint nb_match; /* How many dissectors matched searched_name */
517 typedef struct protocol_name_search *protocol_name_search_t;
520 * This function parses all dissectors associated with a table to find the
521 * one whose protocol has the specified filter name. It is called
522 * as a reference function in a call to dissector_table_foreach_handle.
523 * The name we are looking for, as well as the results, are stored in the
524 * protocol_name_search struct pointed to by user_data.
525 * If called using dissector_table_foreach_handle, we actually parse the
526 * whole list of dissectors.
529 find_protocol_name_func(const gchar *table _U_, gpointer handle, gpointer user_data)
533 const gchar *protocol_filter_name;
534 protocol_name_search_t search_info;
538 search_info = (protocol_name_search_t)user_data;
540 proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
541 if (proto_id != -1) {
542 protocol_filter_name = proto_get_protocol_filter_name(proto_id);
543 g_assert(protocol_filter_name != NULL);
544 if (strcmp(protocol_filter_name, search_info->searched_name) == 0) {
546 if (search_info->nb_match == 0) {
547 /* Record this handle only if this is the first match */
548 search_info->matched_handle = (dissector_handle_t)handle; /* Record the handle for this matching dissector */
550 search_info->nb_match++;
556 * Allow dissector key names to be sorted alphabetically
560 compare_dissector_key_name(gconstpointer dissector_a, gconstpointer dissector_b)
562 return strcmp((const char*)dissector_a, (const char*)dissector_b);
566 * Print all layer type names supported.
567 * We send the output to the stream described by the handle output.
571 fprint_all_layer_types(FILE *output)
574 prev_display_dissector_name = NULL;
575 dissector_all_tables_foreach_table(display_dissector_table_names, (gpointer)output, (GCompareFunc)compare_dissector_key_name);
579 * Print all protocol names supported for a specific layer type.
580 * table_name contains the layer type name in which the search is performed.
581 * We send the output to the stream described by the handle output.
585 fprint_all_protocols_for_layer_types(FILE *output, gchar *table_name)
588 prev_display_dissector_name = NULL;
589 dissector_table_foreach_handle(table_name,
590 display_dissector_names,
595 * The function below parses the command-line parameters for the decode as
596 * feature (a string pointer by cl_param).
597 * It checks the format of the command-line, searches for a matching table
598 * and dissector. If a table/dissector match is not found, we display a
599 * summary of the available tables/dissectors (on stderr) and return FALSE.
600 * If everything is fine, we get the "Decode as" preference activated,
601 * then we return TRUE.
604 add_decode_as(const gchar *cl_param)
607 guint32 selector, selector2;
608 gchar *decoded_param;
609 gchar *remaining_param;
611 gchar *dissector_str;
612 dissector_handle_t dissector_matching;
613 dissector_table_t table_matching;
614 ftenum_t dissector_table_selector_type;
615 struct protocol_name_search user_protocol_name;
619 /* The following code will allocate and copy the command-line options in a string pointed by decoded_param */
622 decoded_param = g_strdup(cl_param);
623 g_assert(decoded_param);
626 /* The lines below will parse this string (modifying it) to extract all
627 necessary information. Note that decoded_param is still needed since
628 strings are not copied - we just save pointers. */
630 /* This section extracts a layer type (table_name) from decoded_param */
631 table_name = decoded_param; /* Layer type string starts from beginning */
633 remaining_param = strchr(table_name, '=');
634 if (remaining_param == NULL) {
635 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
636 /* If the argument does not follow the template, carry on anyway to check
637 if the table name is at least correct. If remaining_param is NULL,
638 we'll exit anyway further down */
641 *remaining_param = '\0'; /* Terminate the layer type string (table_name) where '=' was detected */
644 /* Remove leading and trailing spaces from the table name */
645 while ( table_name[0] == ' ' )
647 while ( table_name[strlen(table_name) - 1] == ' ' )
648 table_name[strlen(table_name) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
650 /* The following part searches a table matching with the layer type specified */
651 table_matching = NULL;
653 /* Look for the requested table */
654 if ( !(*(table_name)) ) { /* Is the table name empty, if so, don't even search for anything, display a message */
655 cmdarg_err("No layer type specified"); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
658 table_matching = find_dissector_table(table_name);
659 if (!table_matching) {
660 cmdarg_err("Unknown layer type -- %s", table_name); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
664 if (!table_matching) {
665 /* Display a list of supported layer types to help the user, if the
666 specified layer type was not found */
667 cmdarg_err("Valid layer types are:");
668 fprint_all_layer_types(stderr);
670 if (remaining_param == NULL || !table_matching) {
671 /* Exit if the layer type was not found, or if no '=' separator was found
673 g_free(decoded_param);
677 if (*(remaining_param + 1) != '=') { /* Check for "==" and not only '=' */
678 cmdarg_err("WARNING: -d requires \"==\" instead of \"=\". Option will be treated as \"%s==%s\"", table_name, remaining_param + 1);
681 remaining_param++; /* Move to the second '=' */
682 *remaining_param = '\0'; /* Remove the second '=' */
684 remaining_param++; /* Position after the layer type string */
686 /* This section extracts a selector value (selector_str) from decoded_param */
688 selector_str = remaining_param; /* Next part starts with the selector number */
690 remaining_param = strchr(selector_str, ',');
691 if (remaining_param == NULL) {
692 cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
693 /* If the argument does not follow the template, carry on anyway to check
694 if the selector value is at least correct. If remaining_param is NULL,
695 we'll exit anyway further down */
698 *remaining_param = '\0'; /* Terminate the selector number string (selector_str) where ',' was detected */
701 dissector_table_selector_type = get_dissector_table_selector_type(table_name);
703 switch (dissector_table_selector_type) {
709 /* The selector for this table is an unsigned number. Parse it as such.
710 There's no need to remove leading and trailing spaces from the
711 selector number string, because sscanf will do that for us. */
712 switch (sscanf(selector_str, "%u%c%u", &selector, &op, &selector2)) {
717 if (op != ':' && op != '-') {
718 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
719 g_free(decoded_param);
723 if ((selector2 == 0) || ((guint64)selector + selector2 - 1) > G_MAXUINT32) {
724 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
725 g_free(decoded_param);
729 else if (selector2 < selector) {
730 /* We could swap them for the user, but maybe it's better to call
731 * this out as an error in case it's not what was intended? */
732 cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
733 g_free(decoded_param);
738 cmdarg_err("Invalid selector number \"%s\"", selector_str);
739 g_free(decoded_param);
748 /* The selector for this table is a string. */
752 /* There are currently no dissector tables with any types other
753 than the ones listed above. */
754 g_assert_not_reached();
757 if (remaining_param == NULL) {
758 /* Exit if no ',' separator was found (see above) */
759 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
760 fprint_all_protocols_for_layer_types(stderr, table_name);
761 g_free(decoded_param);
765 remaining_param++; /* Position after the selector number string */
767 /* This section extracts a protocol filter name (dissector_str) from decoded_param */
769 dissector_str = remaining_param; /* All the rest of the string is the dissector (decode as protocol) name */
771 /* Remove leading and trailing spaces from the dissector name */
772 while ( dissector_str[0] == ' ' )
774 while ( dissector_str[strlen(dissector_str) - 1] == ' ' )
775 dissector_str[strlen(dissector_str) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
777 dissector_matching = NULL;
779 /* We now have a pointer to the handle for the requested table inside the variable table_matching */
780 if ( ! (*dissector_str) ) { /* Is the dissector name empty, if so, don't even search for a matching dissector and display all dissectors found for the selected table */
781 cmdarg_err("No protocol name specified"); /* Note, we don't exit here, but dissector_matching will remain NULL, so we exit below */
784 user_protocol_name.nb_match = 0;
785 user_protocol_name.searched_name = dissector_str;
786 user_protocol_name.matched_handle = NULL;
788 dissector_table_foreach_handle(table_name, find_protocol_name_func, &user_protocol_name); /* Go and perform the search for this dissector in the this table's dissectors' names and shortnames */
790 if (user_protocol_name.nb_match != 0) {
791 dissector_matching = user_protocol_name.matched_handle;
792 if (user_protocol_name.nb_match > 1) {
793 cmdarg_err("WARNING: Protocol \"%s\" matched %u dissectors, first one will be used", dissector_str, user_protocol_name.nb_match);
797 /* OK, check whether the problem is that there isn't any such
798 protocol, or that there is but it's not specified as a protocol
799 that's valid for that dissector table.
800 Note, we don't exit here, but dissector_matching will remain NULL,
802 if (proto_get_id_by_filter_name(dissector_str) == -1) {
803 /* No such protocol */
804 cmdarg_err("Unknown protocol -- \"%s\"", dissector_str);
806 cmdarg_err("Protocol \"%s\" isn't valid for layer type \"%s\"",
807 dissector_str, table_name);
812 if (!dissector_matching) {
813 cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
814 fprint_all_protocols_for_layer_types(stderr, table_name);
815 g_free(decoded_param);
819 /* This is the end of the code that parses the command-line options.
820 All information is now stored in the variables:
824 The above variables that are strings are still pointing to areas within
825 decoded_parm. decoded_parm thus still needs to be kept allocated in
826 until we stop needing these variables
827 decoded_param will be deallocated at each exit point of this function */
830 /* We now have a pointer to the handle for the requested dissector
831 (requested protocol) inside the variable dissector_matching */
832 switch (dissector_table_selector_type) {
838 /* The selector for this table is an unsigned number. */
840 dissector_change_uint(table_name, selector, dissector_matching);
841 } else if (op == ':') {
842 for (i = selector; i < (guint64)selector + selector2; i++) {
843 dissector_change_uint(table_name, (guint32)i, dissector_matching);
845 } else { /* op == '-' */
846 for (i = selector; i <= selector2; i++) {
847 dissector_change_uint(table_name, (guint32)i, dissector_matching);
856 /* The selector for this table is a string. */
857 dissector_change_string(table_name, selector_str, dissector_matching);
861 /* There are currently no dissector tables with any types other
862 than the ones listed above. */
863 g_assert_not_reached();
865 g_free(decoded_param); /* "Decode As" rule has been successfully added */
870 tshark_log_handler (const gchar *log_domain, GLogLevelFlags log_level,
871 const gchar *message, gpointer user_data)
873 /* ignore log message, if log_level isn't interesting based
874 upon the console log preferences.
875 If the preferences haven't been loaded loaded yet, display the
878 The default console_log_level preference value is such that only
879 ERROR, CRITICAL and WARNING level messages are processed;
880 MESSAGE, INFO and DEBUG level messages are ignored.
882 XXX: Aug 07, 2009: Prior tshark g_log code was hardwired to process only
883 ERROR and CRITICAL level messages so the current code is a behavioral
884 change. The current behavior is the same as in Wireshark.
886 if ((log_level & G_LOG_LEVEL_MASK & prefs.console_log_level) == 0 &&
887 prefs.console_log_level != 0) {
891 g_log_default_handler(log_domain, log_level, message, user_data);
896 output_file_description(const char *fname)
898 char *save_file_string;
900 /* Get a string that describes what we're writing to */
901 if (strcmp(fname, "-") == 0) {
902 /* We're writing to the standard output */
903 save_file_string = g_strdup("standard output");
905 /* We're writing to a file with the name in save_file */
906 save_file_string = g_strdup_printf("file \"%s\"", fname);
908 return save_file_string;
912 print_current_user(void) {
913 gchar *cur_user, *cur_group;
915 if (started_with_special_privs()) {
916 cur_user = get_cur_username();
917 cur_group = get_cur_groupname();
918 fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
919 cur_user, cur_group);
922 if (running_with_special_privs()) {
923 fprintf(stderr, " This could be dangerous.");
925 fprintf(stderr, "\n");
930 get_tshark_compiled_version_info(GString *str)
932 /* Capture libraries */
933 get_compiled_caplibs_version(str);
936 g_string_append(str, ", ");
938 g_string_append(str, "with libz ");
940 g_string_append(str, ZLIB_VERSION);
941 #else /* ZLIB_VERSION */
942 g_string_append(str, "(version unknown)");
943 #endif /* ZLIB_VERSION */
944 #else /* HAVE_LIBZ */
945 g_string_append(str, "without libz");
946 #endif /* HAVE_LIBZ */
950 get_tshark_runtime_version_info(GString *str)
953 /* Capture libraries */
954 g_string_append(str, ", ");
955 get_runtime_caplibs_version(str);
959 #if defined(HAVE_LIBZ) && !defined(_WIN32)
960 g_string_append_printf(str, ", with libz %s", zlibVersion());
963 /* stuff used by libwireshark */
964 epan_get_runtime_version_info(str);
968 main(int argc, char *argv[])
970 GString *comp_info_str;
971 GString *runtime_info_str;
972 char *init_progfile_dir_error;
975 static const struct option long_options[] = {
976 {(char *)"help", no_argument, NULL, 'h'},
977 {(char *)"version", no_argument, NULL, 'v'},
978 LONGOPT_CAPTURE_COMMON
982 gboolean arg_error = FALSE;
988 char *gpf_path, *pf_path;
989 char *gdp_path, *dp_path;
990 int gpf_open_errno, gpf_read_errno;
991 int pf_open_errno, pf_read_errno;
992 int gdp_open_errno, gdp_read_errno;
993 int dp_open_errno, dp_read_errno;
995 volatile int exit_status = 0;
997 gboolean list_link_layer_types = FALSE;
998 gboolean start_capture = FALSE;
1003 gboolean capture_option_specified = FALSE;
1005 gboolean quiet = FALSE;
1006 #ifdef PCAP_NG_DEFAULT
1007 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAPNG;
1009 volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAP;
1011 volatile gboolean out_file_name_res = FALSE;
1012 volatile int in_file_type = WTAP_TYPE_AUTO;
1013 gchar *volatile cf_name = NULL;
1014 gchar *rfilter = NULL;
1015 gchar *dfilter = NULL;
1016 #ifdef HAVE_PCAP_OPEN_DEAD
1017 struct bpf_program fcode;
1019 dfilter_t *rfcode = NULL;
1020 dfilter_t *dfcode = NULL;
1025 gchar *output_only = NULL;
1026 GSList *disable_protocol_slist = NULL;
1027 GSList *enable_heur_slist = NULL;
1028 GSList *disable_heur_slist = NULL;
1031 * The leading + ensures that getopt_long() does not permute the argv[]
1034 * We have to make sure that the first getopt_long() preserves the content
1035 * of argv[] for the subsequent getopt_long() call.
1037 * We use getopt_long() in both cases to ensure that we're using a routine
1038 * whose permutation behavior we can control in the same fashion on all
1039 * platforms, and so that, if we ever need to process a long argument before
1040 * doing further initialization, we can do so.
1042 * Glibc and Solaris libc document that a leading + disables permutation
1043 * of options, regardless of whether POSIXLY_CORRECT is set or not; *BSD
1044 * and OS X don't document it, but do so anyway.
1046 * We do *not* use a leading - because the behavior of a leading - is
1047 * platform-dependent.
1049 #define OPTSTRING "+2" OPTSTRING_CAPTURE_COMMON "C:d:e:E:F:gG:hH:" "K:lnN:o:O:PqQr:R:S:t:T:u:vVw:W:xX:Y:z:"
1051 static const char optstring[] = OPTSTRING;
1053 tshark_debug1("tshark started with %d args", argc);
1055 /* Set the C-language locale to the native environment. */
1056 setlocale(LC_ALL, "");
1058 cmdarg_err_init(failure_message, failure_message_cont);
1061 arg_list_utf_16to8(argc, argv);
1062 create_app_running_mutex();
1063 #if !GLIB_CHECK_VERSION(2,31,0)
1064 g_thread_init(NULL);
1069 * Get credential information for later use, and drop privileges
1070 * before doing anything else.
1071 * Let the user know if anything happened.
1073 init_process_policies();
1074 relinquish_special_privs_perm();
1075 print_current_user();
1078 * Attempt to get the pathname of the executable file.
1080 init_progfile_dir_error = init_progfile_dir(argv[0], (void *)main);
1081 if (init_progfile_dir_error != NULL) {
1082 fprintf(stderr, "tshark: Can't get pathname of tshark program: %s.\n",
1083 init_progfile_dir_error);
1086 initialize_funnel_ops();
1089 /* Load wpcap if possible. Do this before collecting the run-time version information */
1092 /* Warn the user if npf.sys isn't loaded. */
1093 if (!npf_sys_is_running() && get_windows_major_version() >= 6) {
1094 fprintf(stderr, "The NPF driver isn't running. You may have trouble "
1095 "capturing or\nlisting interfaces.\n");
1099 /* Get the compile-time version information string */
1100 comp_info_str = get_compiled_version_info(get_tshark_compiled_version_info,
1101 epan_get_compiled_version_info);
1103 /* Get the run-time version information string */
1104 runtime_info_str = get_runtime_version_info(get_tshark_runtime_version_info);
1106 /* Add it to the information to be reported on a crash. */
1107 ws_add_crash_info("TShark (Wireshark) %s\n"
1112 get_ws_vcs_version_info(), comp_info_str->str, runtime_info_str->str);
1113 g_string_free(comp_info_str, TRUE);
1114 g_string_free(runtime_info_str, TRUE);
1117 * In order to have the -X opts assigned before the wslua machine starts
1118 * we need to call getopt_long before epan_init() gets called.
1120 * In order to handle, for example, -o options, we also need to call it
1121 * *after* epan_init() gets called, so that the dissectors have had a
1122 * chance to register their preferences.
1124 * XXX - can we do this all with one getopt_long() call, saving the
1125 * arguments we can't handle until after initializing libwireshark,
1126 * and then process them after initializing libwireshark?
1130 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
1132 case 'C': /* Configuration Profile */
1133 if (profile_exists (optarg, FALSE)) {
1134 set_profile_name (optarg);
1136 cmdarg_err("Configuration Profile \"%s\" does not exist", optarg);
1140 case 'P': /* Print packet summary info even when writing to a file */
1141 print_packet_info = TRUE;
1142 print_summary = TRUE;
1144 case 'O': /* Only output these protocols */
1145 output_only = g_strdup(optarg);
1147 case 'V': /* Verbose */
1148 print_details = TRUE;
1149 print_packet_info = TRUE;
1151 case 'x': /* Print packet data in hex (and ASCII) */
1153 /* The user asked for hex output, so let's ensure they get it,
1154 * even if they're writing to a file.
1156 print_packet_info = TRUE;
1167 * Print packet summary information is the default, unless either -V or -x
1168 * were specified and -P was not. Note that this is new behavior, which
1169 * allows for the possibility of printing only hex/ascii output without
1170 * necessarily requiring that either the summary or details be printed too.
1172 if (print_summary == -1)
1173 print_summary = (print_details || print_hex) ? FALSE : TRUE;
1175 /** Send All g_log messages to our own handler **/
1179 G_LOG_LEVEL_CRITICAL|
1180 G_LOG_LEVEL_WARNING|
1181 G_LOG_LEVEL_MESSAGE|
1184 G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION;
1186 g_log_set_handler(NULL,
1187 (GLogLevelFlags)log_flags,
1188 tshark_log_handler, NULL /* user_data */);
1189 g_log_set_handler(LOG_DOMAIN_MAIN,
1190 (GLogLevelFlags)log_flags,
1191 tshark_log_handler, NULL /* user_data */);
1194 g_log_set_handler(LOG_DOMAIN_CAPTURE,
1195 (GLogLevelFlags)log_flags,
1196 tshark_log_handler, NULL /* user_data */);
1197 g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
1198 (GLogLevelFlags)log_flags,
1199 tshark_log_handler, NULL /* user_data */);
1202 init_report_err(failure_message, open_failure_message, read_failure_message,
1203 write_failure_message);
1206 capture_opts_init(&global_capture_opts);
1207 capture_session_init(&global_capture_session, &cfile);
1210 timestamp_set_type(TS_RELATIVE);
1211 timestamp_set_precision(TS_PREC_AUTO);
1212 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1214 init_open_routines();
1217 /* Register all the plugin types we have. */
1218 epan_register_plugin_types(); /* Types known to libwireshark */
1219 wtap_register_plugin_types(); /* Types known to libwiretap */
1221 /* Scan for plugins. This does *not* call their registration routines;
1222 that's done later. */
1225 /* Register all libwiretap plugin modules. */
1226 register_all_wiretap_modules();
1229 /* Register all dissectors; we must do this before checking for the
1230 "-G" flag, as the "-G" flag dumps information registered by the
1231 dissectors, and we must do it before we read the preferences, in
1232 case any dissectors register preferences. */
1233 epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL);
1235 /* Register all tap listeners; we do this before we parse the arguments,
1236 as the "-z" argument can specify a registered tap. */
1238 /* we register the plugin taps before the other taps because
1239 stats_tree taps plugins will be registered as tap listeners
1240 by stats_tree_stat.c and need to registered before that */
1242 register_all_plugin_tap_listeners();
1244 register_all_tap_listeners();
1245 conversation_table_set_gui_info(init_iousers);
1246 hostlist_table_set_gui_info(init_hostlists);
1247 srt_table_iterate_tables(register_srt_tables, NULL);
1248 rtd_table_iterate_tables(register_rtd_tables, NULL);
1249 new_stat_tap_iterate_tables(register_simple_stat_tables, NULL);
1251 /* If invoked with the "-G" flag, we dump out information based on
1252 the argument to the "-G" flag; if no argument is specified,
1253 for backwards compatibility we dump out a glossary of display
1256 XXX - we do this here, for now, to support "-G" with no arguments.
1257 If none of our build or other processes uses "-G" with no arguments,
1258 we can just process it with the other arguments. */
1259 if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
1260 proto_initialize_all_prefixes();
1263 proto_registrar_dump_fields();
1265 if (strcmp(argv[2], "column-formats") == 0)
1266 column_dump_column_formats();
1267 else if (strcmp(argv[2], "currentprefs") == 0) {
1268 read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1269 &pf_open_errno, &pf_read_errno, &pf_path);
1272 else if (strcmp(argv[2], "decodes") == 0)
1273 dissector_dump_decodes();
1274 else if (strcmp(argv[2], "defaultprefs") == 0)
1276 else if (strcmp(argv[2], "dissector-tables") == 0)
1277 dissector_dump_dissector_tables();
1278 else if (strcmp(argv[2], "fields") == 0)
1279 proto_registrar_dump_fields();
1280 else if (strcmp(argv[2], "ftypes") == 0)
1281 proto_registrar_dump_ftypes();
1282 else if (strcmp(argv[2], "heuristic-decodes") == 0)
1283 dissector_dump_heur_decodes();
1284 else if (strcmp(argv[2], "plugins") == 0) {
1289 wslua_plugins_dump_all();
1292 else if (strcmp(argv[2], "protocols") == 0)
1293 proto_registrar_dump_protocols();
1294 else if (strcmp(argv[2], "values") == 0)
1295 proto_registrar_dump_values();
1296 else if (strcmp(argv[2], "?") == 0)
1297 glossary_option_help();
1298 else if (strcmp(argv[2], "-?") == 0)
1299 glossary_option_help();
1301 cmdarg_err("Invalid \"%s\" option for -G flag, enter -G ? for more help.", argv[2]);
1308 tshark_debug0("tshark reading preferences");
1310 prefs_p = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
1311 &pf_open_errno, &pf_read_errno, &pf_path);
1312 if (gpf_path != NULL) {
1313 if (gpf_open_errno != 0) {
1314 cmdarg_err("Can't open global preferences file \"%s\": %s.",
1315 pf_path, g_strerror(gpf_open_errno));
1317 if (gpf_read_errno != 0) {
1318 cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
1319 pf_path, g_strerror(gpf_read_errno));
1322 if (pf_path != NULL) {
1323 if (pf_open_errno != 0) {
1324 cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
1325 g_strerror(pf_open_errno));
1327 if (pf_read_errno != 0) {
1328 cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
1329 pf_path, g_strerror(pf_read_errno));
1335 /* Read the disabled protocols file. */
1336 read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
1337 &dp_path, &dp_open_errno, &dp_read_errno);
1338 read_disabled_heur_dissector_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
1339 &dp_path, &dp_open_errno, &dp_read_errno);
1340 if (gdp_path != NULL) {
1341 if (gdp_open_errno != 0) {
1342 cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
1343 gdp_path, g_strerror(gdp_open_errno));
1345 if (gdp_read_errno != 0) {
1346 cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
1347 gdp_path, g_strerror(gdp_read_errno));
1351 if (dp_path != NULL) {
1352 if (dp_open_errno != 0) {
1354 "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
1355 g_strerror(dp_open_errno));
1357 if (dp_read_errno != 0) {
1359 "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
1360 g_strerror(dp_read_errno));
1365 cap_file_init(&cfile);
1367 /* Print format defaults to this. */
1368 print_format = PR_FMT_TEXT;
1370 output_fields = output_fields_new();
1373 * To reset the options parser, set optreset to 1 on platforms that
1374 * have optreset (documented in *BSD and OS X, apparently present but
1375 * not documented in Solaris - the Illumos repository seems to
1376 * suggest that the first Solaris getopt_long(), at least as of 2004,
1377 * was based on the NetBSD one, it had optreset) and set optind to 1,
1378 * and set optind to 0 otherwise (documented as working in the GNU
1379 * getopt_long(). Setting optind to 0 didn't originally work in the
1380 * NetBSD one, but that was added later - we don't want to depend on
1381 * it if we have optreset).
1383 * Also reset opterr to 1, so that error messages are printed by
1386 #ifdef HAVE_OPTRESET
1394 /* Now get our args */
1395 while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
1397 case '2': /* Perform two pass analysis */
1398 perform_two_pass_analysis = TRUE;
1400 case 'a': /* autostop criteria */
1401 case 'b': /* Ringbuffer option */
1402 case 'c': /* Capture x packets */
1403 case 'f': /* capture filter */
1404 case 'g': /* enable group read access on file(s) */
1405 case 'i': /* Use interface x */
1406 case 'p': /* Don't capture in promiscuous mode */
1407 #ifdef HAVE_PCAP_REMOTE
1408 case 'A': /* Authentication */
1410 #ifdef HAVE_PCAP_CREATE
1411 case 'I': /* Capture in monitor mode, if available */
1413 case 's': /* Set the snapshot (capture) length */
1414 case 'w': /* Write to capture file x */
1415 case 'y': /* Set the pcap data link type */
1416 case LONGOPT_NUM_CAP_COMMENT: /* add a capture comment */
1417 #ifdef CAN_SET_CAPTURE_BUFFER_SIZE
1418 case 'B': /* Buffer size */
1421 status = capture_opts_add_opt(&global_capture_opts, opt, optarg, &start_capture);
1428 * Output file name, if we're reading a file and writing to another
1431 output_file_name = optarg;
1433 capture_option_specified = TRUE;
1439 /* already processed; just ignore it now */
1441 case 'd': /* Decode as rule */
1442 if (!add_decode_as(optarg))
1445 #if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
1446 case 'K': /* Kerberos keytab file */
1447 read_keytab_file(optarg);
1450 case 'D': /* Print a list of capture devices and exit */
1452 if_list = capture_interface_list(&err, &err_str,NULL);
1453 if (if_list == NULL) {
1455 cmdarg_err("There are no interfaces on which a capture can be done");
1457 cmdarg_err("%s", err_str);
1462 capture_opts_print_interfaces(if_list);
1463 free_interface_list(if_list);
1466 capture_option_specified = TRUE;
1472 output_fields_add(output_fields, optarg);
1476 if (!output_fields_set_option(output_fields, optarg)) {
1477 cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
1478 output_fields_list_options(stderr);
1483 out_file_type = wtap_short_string_to_file_type_subtype(optarg);
1484 if (out_file_type < 0) {
1485 cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
1486 list_capture_types();
1490 case 'W': /* Select extra information to save in our capture file */
1491 /* This is patterned after the -N flag which may not be the best idea. */
1492 if (strchr(optarg, 'n')) {
1493 out_file_name_res = TRUE;
1495 cmdarg_err("Invalid -W argument \"%s\"; it must be one of:", optarg);
1496 cmdarg_err_cont("\t'n' write network address resolution information (pcapng only)");
1500 case 'H': /* Read address to name mappings from a hosts file */
1501 if (! add_hosts_file(optarg))
1503 cmdarg_err("Can't read host entries from \"%s\"", optarg);
1506 out_file_name_res = TRUE;
1509 case 'h': /* Print help and exit */
1510 printf("TShark (Wireshark) %s\n"
1511 "Dump and analyze network traffic.\n"
1512 "See https://www.wireshark.org for more information.\n",
1513 get_ws_vcs_version_info());
1514 print_usage(stdout);
1517 case 'l': /* "Line-buffer" standard output */
1518 /* This isn't line-buffering, strictly speaking, it's just
1519 flushing the standard output after the information for
1520 each packet is printed; however, that should be good
1521 enough for all the purposes to which "-l" is put (and
1522 is probably actually better for "-V", as it does fewer
1525 See the comment in "process_packet()" for an explanation of
1526 why we do that, and why we don't just use "setvbuf()" to
1527 make the standard output line-buffered (short version: in
1528 Windows, "line-buffered" is the same as "fully-buffered",
1529 and the output buffer is only flushed when it fills up). */
1530 line_buffered = TRUE;
1532 case 'L': /* Print list of link-layer types and exit */
1534 list_link_layer_types = TRUE;
1536 capture_option_specified = TRUE;
1540 case 'n': /* No name resolution */
1541 disable_name_resolution();
1543 case 'N': /* Select what types of addresses/port #s to resolve */
1544 badopt = string_to_name_resolve(optarg, &gbl_resolv_flags);
1545 if (badopt != '\0') {
1546 cmdarg_err("-N specifies unknown resolving option '%c'; valid options are:",
1548 cmdarg_err_cont("\t'C' to enable concurrent (asynchronous) DNS lookups\n"
1549 "\t'd' to enable address resolution from captured DNS packets\n"
1550 "\t'm' to enable MAC address resolution\n"
1551 "\t'n' to enable network address resolution\n"
1552 "\t'N' to enable using external resolvers (e.g., DNS)\n"
1553 "\t for network address resolution\n"
1554 "\t't' to enable transport-layer port number resolution");
1558 case 'o': /* Override preference from command line */
1559 switch (prefs_set_pref(optarg)) {
1564 case PREFS_SET_SYNTAX_ERR:
1565 cmdarg_err("Invalid -o flag \"%s\"", optarg);
1569 case PREFS_SET_NO_SUCH_PREF:
1570 case PREFS_SET_OBSOLETE:
1571 cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
1576 case 'q': /* Quiet */
1579 case 'Q': /* Really quiet */
1581 really_quiet = TRUE;
1583 case 'r': /* Read capture file x */
1584 cf_name = g_strdup(optarg);
1586 case 'R': /* Read file filter */
1590 /* already processed; just ignore it now */
1592 case 'S': /* Set the line Separator to be printed between packets */
1595 case 't': /* Time stamp type */
1596 if (strcmp(optarg, "r") == 0)
1597 timestamp_set_type(TS_RELATIVE);
1598 else if (strcmp(optarg, "a") == 0)
1599 timestamp_set_type(TS_ABSOLUTE);
1600 else if (strcmp(optarg, "ad") == 0)
1601 timestamp_set_type(TS_ABSOLUTE_WITH_YMD);
1602 else if (strcmp(optarg, "adoy") == 0)
1603 timestamp_set_type(TS_ABSOLUTE_WITH_YDOY);
1604 else if (strcmp(optarg, "d") == 0)
1605 timestamp_set_type(TS_DELTA);
1606 else if (strcmp(optarg, "dd") == 0)
1607 timestamp_set_type(TS_DELTA_DIS);
1608 else if (strcmp(optarg, "e") == 0)
1609 timestamp_set_type(TS_EPOCH);
1610 else if (strcmp(optarg, "u") == 0)
1611 timestamp_set_type(TS_UTC);
1612 else if (strcmp(optarg, "ud") == 0)
1613 timestamp_set_type(TS_UTC_WITH_YMD);
1614 else if (strcmp(optarg, "udoy") == 0)
1615 timestamp_set_type(TS_UTC_WITH_YDOY);
1617 cmdarg_err("Invalid time stamp type \"%s\"; it must be one of:", optarg);
1618 cmdarg_err_cont("\t\"a\" for absolute\n"
1619 "\t\"ad\" for absolute with YYYY-MM-DD date\n"
1620 "\t\"adoy\" for absolute with YYYY/DOY date\n"
1621 "\t\"d\" for delta\n"
1622 "\t\"dd\" for delta displayed\n"
1623 "\t\"e\" for epoch\n"
1624 "\t\"r\" for relative\n"
1625 "\t\"u\" for absolute UTC\n"
1626 "\t\"ud\" for absolute UTC with YYYY-MM-DD date\n"
1627 "\t\"udoy\" for absolute UTC with YYYY/DOY date");
1631 case 'T': /* printing Type */
1632 print_packet_info = TRUE;
1633 if (strcmp(optarg, "text") == 0) {
1634 output_action = WRITE_TEXT;
1635 print_format = PR_FMT_TEXT;
1636 } else if (strcmp(optarg, "ps") == 0) {
1637 output_action = WRITE_TEXT;
1638 print_format = PR_FMT_PS;
1639 } else if (strcmp(optarg, "pdml") == 0) {
1640 output_action = WRITE_XML;
1641 print_details = TRUE; /* Need details */
1642 print_summary = FALSE; /* Don't allow summary */
1643 } else if (strcmp(optarg, "psml") == 0) {
1644 output_action = WRITE_XML;
1645 print_details = FALSE; /* Don't allow details */
1646 print_summary = TRUE; /* Need summary */
1647 } else if (strcmp(optarg, "fields") == 0) {
1648 output_action = WRITE_FIELDS;
1649 print_details = TRUE; /* Need full tree info */
1650 print_summary = FALSE; /* Don't allow summary */
1652 cmdarg_err("Invalid -T parameter \"%s\"; it must be one of:", optarg); /* x */
1653 cmdarg_err_cont("\t\"fields\" The values of fields specified with the -e option, in a form\n"
1654 "\t specified by the -E option.\n"
1655 "\t\"pdml\" Packet Details Markup Language, an XML-based format for the\n"
1656 "\t details of a decoded packet. This information is equivalent to\n"
1657 "\t the packet details printed with the -V flag.\n"
1658 "\t\"ps\" PostScript for a human-readable one-line summary of each of\n"
1659 "\t the packets, or a multi-line view of the details of each of\n"
1660 "\t the packets, depending on whether the -V flag was specified.\n"
1661 "\t\"psml\" Packet Summary Markup Language, an XML-based format for the\n"
1662 "\t summary information of a decoded packet. This information is\n"
1663 "\t equivalent to the information shown in the one-line summary\n"
1664 "\t printed by default.\n"
1665 "\t\"text\" Text of a human-readable one-line summary of each of the\n"
1666 "\t packets, or a multi-line view of the details of each of the\n"
1667 "\t packets, depending on whether the -V flag was specified.\n"
1668 "\t This is the default.");
1672 case 'u': /* Seconds type */
1673 if (strcmp(optarg, "s") == 0)
1674 timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
1675 else if (strcmp(optarg, "hms") == 0)
1676 timestamp_set_seconds_type(TS_SECONDS_HOUR_MIN_SEC);
1678 cmdarg_err("Invalid seconds type \"%s\"; it must be one of:", optarg);
1679 cmdarg_err_cont("\t\"s\" for seconds\n"
1680 "\t\"hms\" for hours, minutes and seconds");
1684 case 'v': /* Show version and exit */
1685 comp_info_str = get_compiled_version_info(get_tshark_compiled_version_info,
1686 epan_get_compiled_version_info);
1687 runtime_info_str = get_runtime_version_info(get_tshark_runtime_version_info);
1688 show_version("TShark (Wireshark)", comp_info_str, runtime_info_str);
1689 g_string_free(comp_info_str, TRUE);
1690 g_string_free(runtime_info_str, TRUE);
1691 /* We don't really have to cleanup here, but it's a convenient way to test
1692 * start-up and shut-down of the epan library without any UI-specific
1693 * cruft getting in the way. Makes the results of running
1694 * $ ./tools/valgrind-wireshark -n
1695 * much more useful. */
1698 case 'O': /* Only output these protocols */
1699 /* already processed; just ignore it now */
1701 case 'V': /* Verbose */
1702 /* already processed; just ignore it now */
1704 case 'x': /* Print packet data in hex (and ASCII) */
1705 /* already processed; just ignore it now */
1708 /* already processed; just ignore it now */
1714 /* We won't call the init function for the stat this soon
1715 as it would disallow MATE's fields (which are registered
1716 by the preferences set callback) from being used as
1717 part of a tap filter. Instead, we just add the argument
1718 to a list of stat arguments. */
1719 if (strcmp("help", optarg) == 0) {
1720 fprintf(stderr, "tshark: The available statistics for the \"-z\" option are:\n");
1721 list_stat_cmd_args();
1724 if (!process_stat_cmd_arg(optarg)) {
1725 cmdarg_err("Invalid -z argument \"%s\"; it must be one of:", optarg);
1726 list_stat_cmd_args();
1730 case LONGOPT_DISABLE_PROTOCOL: /* disable dissection of protocol */
1731 disable_protocol_slist = g_slist_append(disable_protocol_slist, optarg);
1733 case LONGOPT_ENABLE_HEURISTIC: /* enable heuristic dissection of protocol */
1734 enable_heur_slist = g_slist_append(enable_heur_slist, optarg);
1736 case LONGOPT_DISABLE_HEURISTIC: /* disable heuristic dissection of protocol */
1737 disable_heur_slist = g_slist_append(disable_heur_slist, optarg);
1741 case '?': /* Bad flag - print usage message */
1744 list_capture_types();
1747 print_usage(stderr);
1754 /* If we specified output fields, but not the output field type... */
1755 if (WRITE_FIELDS != output_action && 0 != output_fields_num_fields(output_fields)) {
1756 cmdarg_err("Output fields were specified with \"-e\", "
1757 "but \"-Tfields\" was not specified.");
1759 } else if (WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
1760 cmdarg_err("\"-Tfields\" was specified, but no fields were "
1761 "specified with \"-e\".");
1766 /* If no capture filter or display filter has been specified, and there are
1767 still command-line arguments, treat them as the tokens of a capture
1768 filter (if no "-r" flag was specified) or a display filter (if a "-r"
1769 flag was specified. */
1770 if (optind < argc) {
1771 if (cf_name != NULL) {
1772 if (dfilter != NULL) {
1773 cmdarg_err("Display filters were specified both with \"-d\" "
1774 "and with additional command-line arguments.");
1777 dfilter = get_args_as_string(argc, argv, optind);
1782 if (global_capture_opts.default_options.cfilter) {
1783 cmdarg_err("A default capture filter was specified both with \"-f\""
1784 " and with additional command-line arguments.");
1787 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
1788 interface_options interface_opts;
1789 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
1790 if (interface_opts.cfilter == NULL) {
1791 interface_opts.cfilter = get_args_as_string(argc, argv, optind);
1792 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
1793 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
1795 cmdarg_err("A capture filter was specified both with \"-f\""
1796 " and with additional command-line arguments.");
1800 global_capture_opts.default_options.cfilter = get_args_as_string(argc, argv, optind);
1802 capture_option_specified = TRUE;
1808 if (!global_capture_opts.saving_to_file) {
1809 /* We're not saving the capture to a file; if "-q" wasn't specified,
1810 we should print packet information */
1812 print_packet_info = TRUE;
1814 /* We're saving to a file; if we're writing to the standard output.
1815 and we'll also be writing dissected packets to the standard
1816 output, reject the request. At best, we could redirect that
1817 to the standard error; we *can't* write both to the standard
1818 output and have either of them be useful. */
1819 if (strcmp(global_capture_opts.save_file, "-") == 0 && print_packet_info) {
1820 cmdarg_err("You can't write both raw packet data and dissected packets"
1821 " to the standard output.");
1826 /* We're not saving the capture to a file; if "-q" wasn't specified,
1827 we should print packet information */
1829 print_packet_info = TRUE;
1832 #ifndef HAVE_LIBPCAP
1833 if (capture_option_specified)
1834 cmdarg_err("This version of TShark was not built with support for capturing packets.");
1837 print_usage(stderr);
1842 if (output_action != WRITE_TEXT) {
1843 cmdarg_err("Raw packet hex data can only be printed as text or PostScript");
1848 if (output_only != NULL) {
1851 if (!print_details) {
1852 cmdarg_err("-O requires -V");
1856 output_only_tables = g_hash_table_new (g_str_hash, g_str_equal);
1857 for (ps = strtok (output_only, ","); ps; ps = strtok (NULL, ",")) {
1858 g_hash_table_insert(output_only_tables, (gpointer)ps, (gpointer)ps);
1862 if (rfilter != NULL && !perform_two_pass_analysis) {
1863 cmdarg_err("-R without -2 is deprecated. For single-pass filtering use -Y.");
1868 if (list_link_layer_types) {
1869 /* We're supposed to list the link-layer types for an interface;
1870 did the user also specify a capture file to be read? */
1872 /* Yes - that's bogus. */
1873 cmdarg_err("You can't specify -L and a capture file to be read.");
1876 /* No - did they specify a ring buffer option? */
1877 if (global_capture_opts.multi_files_on) {
1878 cmdarg_err("Ring buffer requested, but a capture isn't being done.");
1884 * "-r" was specified, so we're reading a capture file.
1885 * Capture options don't apply here.
1888 /* We don't support capture filters when reading from a capture file
1889 (the BPF compiler doesn't support all link-layer types that we
1890 support in capture files we read). */
1891 if (global_capture_opts.default_options.cfilter) {
1892 cmdarg_err("Only read filters, not capture filters, "
1893 "can be specified when reading a capture file.");
1896 if (global_capture_opts.multi_files_on) {
1897 cmdarg_err("Multiple capture files requested, but "
1898 "a capture isn't being done.");
1901 if (global_capture_opts.has_file_duration) {
1902 cmdarg_err("Switching capture files after a time interval was specified, but "
1903 "a capture isn't being done.");
1906 if (global_capture_opts.has_ring_num_files) {
1907 cmdarg_err("A ring buffer of capture files was specified, but "
1908 "a capture isn't being done.");
1911 if (global_capture_opts.has_autostop_files) {
1912 cmdarg_err("A maximum number of capture files was specified, but "
1913 "a capture isn't being done.");
1916 if (global_capture_opts.capture_comment) {
1917 cmdarg_err("A capture comment was specified, but "
1918 "a capture isn't being done.\nThere's no support for adding "
1919 "a capture comment to an existing capture file.");
1923 /* Note: TShark now allows the restriction of a _read_ file by packet count
1924 * and byte count as well as a write file. Other autostop options remain valid
1925 * only for a write file.
1927 if (global_capture_opts.has_autostop_duration) {
1928 cmdarg_err("A maximum capture time was specified, but "
1929 "a capture isn't being done.");
1934 * "-r" wasn't specified, so we're doing a live capture.
1936 if (perform_two_pass_analysis) {
1937 /* Two-pass analysis doesn't work with live capture since it requires us
1938 * to buffer packets until we've read all of them, but a live capture
1939 * has no useful/meaningful definition of "all" */
1940 cmdarg_err("Live captures do not support two-pass analysis.");
1944 if (global_capture_opts.saving_to_file) {
1945 /* They specified a "-w" flag, so we'll be saving to a capture file. */
1947 /* When capturing, we only support writing pcap or pcap-ng format. */
1948 if (out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAP &&
1949 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1950 cmdarg_err("Live captures can only be saved in pcap or pcapng format.");
1953 if (global_capture_opts.capture_comment &&
1954 out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
1955 cmdarg_err("A capture comment can only be written to a pcapng file.");
1958 if (global_capture_opts.multi_files_on) {
1959 /* Multiple-file mode doesn't work under certain conditions:
1960 a) it doesn't work if you're writing to the standard output;
1961 b) it doesn't work if you're writing to a pipe;
1963 if (strcmp(global_capture_opts.save_file, "-") == 0) {
1964 cmdarg_err("Multiple capture files requested, but "
1965 "the capture is being written to the standard output.");
1968 if (global_capture_opts.output_to_pipe) {
1969 cmdarg_err("Multiple capture files requested, but "
1970 "the capture file is a pipe.");
1973 if (!global_capture_opts.has_autostop_filesize &&
1974 !global_capture_opts.has_file_duration) {
1975 cmdarg_err("Multiple capture files requested, but "
1976 "no maximum capture file size or duration was specified.");
1980 /* Currently, we don't support read or display filters when capturing
1981 and saving the packets. */
1982 if (rfilter != NULL) {
1983 cmdarg_err("Read filters aren't supported when capturing and saving the captured packets.");
1986 if (dfilter != NULL) {
1987 cmdarg_err("Display filters aren't supported when capturing and saving the captured packets.");
1990 global_capture_opts.use_pcapng = (out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAPNG) ? TRUE : FALSE;
1992 /* They didn't specify a "-w" flag, so we won't be saving to a
1993 capture file. Check for options that only make sense if
1994 we're saving to a file. */
1995 if (global_capture_opts.has_autostop_filesize) {
1996 cmdarg_err("Maximum capture file size specified, but "
1997 "capture isn't being saved to a file.");
2000 if (global_capture_opts.multi_files_on) {
2001 cmdarg_err("Multiple capture files requested, but "
2002 "the capture isn't being saved to a file.");
2005 if (global_capture_opts.capture_comment) {
2006 cmdarg_err("A capture comment was specified, but "
2007 "the capture isn't being saved to a file.");
2016 /* Start windows sockets */
2017 WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
2020 /* Notify all registered modules that have had any of their preferences
2021 changed either from one of the preferences file or from the command
2022 line that their preferences have changed. */
2025 /* At this point MATE will have registered its field array so we can
2026 have a tap filter with one of MATE's late-registered fields as part
2027 of the filter. We can now process all the "-z" arguments. */
2028 start_requested_stats();
2030 /* At this point MATE will have registered its field array so we can
2031 check if the fields specified by the user are all good.
2033 if (!output_fields_valid(output_fields)) {
2034 cmdarg_err("Some fields aren't valid");
2039 /* We currently don't support taps, or printing dissected packets,
2040 if we're writing to a pipe. */
2041 if (global_capture_opts.saving_to_file &&
2042 global_capture_opts.output_to_pipe) {
2043 if (tap_listeners_require_dissection()) {
2044 cmdarg_err("Taps aren't supported when saving to a pipe.");
2047 if (print_packet_info) {
2048 cmdarg_err("Printing dissected packets isn't supported when saving to a pipe.");
2054 if (ex_opt_count("read_format") > 0) {
2055 const gchar* name = ex_opt_get_next("read_format");
2056 in_file_type = open_info_name_to_type(name);
2057 if (in_file_type == WTAP_TYPE_AUTO) {
2058 cmdarg_err("\"%s\" isn't a valid read file format type", name? name : "");
2059 list_read_capture_types();
2064 /* disabled protocols as per configuration file */
2065 if (gdp_path == NULL && dp_path == NULL) {
2066 set_disabled_protos_list();
2067 set_disabled_heur_dissector_list();
2070 if(disable_protocol_slist) {
2071 GSList *proto_disable;
2072 for (proto_disable = disable_protocol_slist; proto_disable != NULL; proto_disable = g_slist_next(proto_disable))
2074 proto_disable_proto_by_name((char*)proto_disable->data);
2078 if(enable_heur_slist) {
2079 GSList *heur_enable;
2080 for (heur_enable = enable_heur_slist; heur_enable != NULL; heur_enable = g_slist_next(heur_enable))
2082 proto_enable_heuristic_by_name((char*)heur_enable->data, TRUE);
2086 if(disable_heur_slist) {
2087 GSList *heur_disable;
2088 for (heur_disable = disable_heur_slist; heur_disable != NULL; heur_disable = g_slist_next(heur_disable))
2090 proto_enable_heuristic_by_name((char*)heur_disable->data, FALSE);
2094 /* Build the column format array */
2095 build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
2098 capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
2099 capture_opts_trim_ring_num_files(&global_capture_opts);
2102 if (rfilter != NULL) {
2103 tshark_debug1("Compiling read filter: '%s'", rfilter);
2104 if (!dfilter_compile(rfilter, &rfcode, &err_msg)) {
2105 cmdarg_err("%s", err_msg);
2108 #ifdef HAVE_PCAP_OPEN_DEAD
2112 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
2114 if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
2116 " Note: That read filter code looks like a valid capture filter;\n"
2117 " maybe you mixed them up?");
2126 cfile.rfcode = rfcode;
2128 if (dfilter != NULL) {
2129 tshark_debug1("Compiling display filter: '%s'", dfilter);
2130 if (!dfilter_compile(dfilter, &dfcode, &err_msg)) {
2131 cmdarg_err("%s", err_msg);
2134 #ifdef HAVE_PCAP_OPEN_DEAD
2138 pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
2140 if (pcap_compile(pc, &fcode, dfilter, 0, 0) != -1) {
2142 " Note: That display filter code looks like a valid capture filter;\n"
2143 " maybe you mixed them up?");
2152 cfile.dfcode = dfcode;
2154 if (print_packet_info) {
2155 /* If we're printing as text or PostScript, we have
2156 to create a print stream. */
2157 if (output_action == WRITE_TEXT) {
2158 switch (print_format) {
2161 print_stream = print_stream_text_stdio_new(stdout);
2165 print_stream = print_stream_ps_stdio_new(stdout);
2169 g_assert_not_reached();
2174 /* We have to dissect each packet if:
2176 we're printing information about each packet;
2178 we're using a read filter on the packets;
2180 we're using a display filter on the packets;
2182 we're using any taps that need dissection. */
2183 do_dissection = print_packet_info || rfcode || dfcode || tap_listeners_require_dissection();
2184 tshark_debug1("tshark: do_dissection = %s", do_dissection ? "TRUE" : "FALSE");
2187 tshark_debug1("tshark: Opening capture file: %s", cf_name);
2189 * We're reading a capture file.
2191 if (cf_open(&cfile, cf_name, in_file_type, FALSE, &err) != CF_OK) {
2196 /* Process the packets in the file */
2197 tshark_debug0("tshark: invoking load_cap_file() to process the packets");
2200 err = load_cap_file(&cfile, global_capture_opts.save_file, out_file_type, out_file_name_res,
2201 global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
2202 global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
2204 err = load_cap_file(&cfile, output_file_name, out_file_type, out_file_name_res, 0, 0);
2207 CATCH(OutOfMemoryError) {
2211 "Sorry, but TShark has to terminate now.\n"
2213 "More information and workarounds can be found at\n"
2214 "https://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2219 /* We still dump out the results of taps, etc., as we might have
2220 read some packets; however, we exit with an error status. */
2224 tshark_debug0("tshark: no capture file specified");
2225 /* No capture file specified, so we're supposed to do a live capture
2226 or get a list of link-layer types for a live capture device;
2227 do we have support for live captures? */
2229 /* if no interface was specified, pick a default */
2230 exit_status = capture_opts_default_iface_if_necessary(&global_capture_opts,
2231 ((prefs_p->capture_device) && (*prefs_p->capture_device != '\0')) ? get_if_name(prefs_p->capture_device) : NULL);
2232 if (exit_status != 0)
2235 /* if requested, list the link layer types and exit */
2236 if (list_link_layer_types) {
2239 /* Get the list of link-layer types for the capture devices. */
2240 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2241 interface_options interface_opts;
2242 if_capabilities_t *caps;
2243 char *auth_str = NULL;
2245 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2246 #ifdef HAVE_PCAP_REMOTE
2247 if (interface_opts.auth_type == CAPTURE_AUTH_PWD) {
2248 auth_str = g_strdup_printf("%s:%s", interface_opts.auth_username, interface_opts.auth_password);
2251 caps = capture_get_if_capabilities(interface_opts.name, interface_opts.monitor_mode, auth_str, &err_str, NULL);
2254 cmdarg_err("%s", err_str);
2258 if (caps->data_link_types == NULL) {
2259 cmdarg_err("The capture device \"%s\" has no data link types.", interface_opts.name);
2262 capture_opts_print_if_capabilities(caps, interface_opts.name, interface_opts.monitor_mode);
2263 free_if_capabilities(caps);
2269 * If the standard error isn't a terminal, don't print packet counts,
2270 * as they won't show up on the user's terminal and they'll get in
2271 * the way of error messages in the file (to which we assume the
2272 * standard error was redirected; if it's redirected to the null
2273 * device, there's no point in printing packet counts anyway).
2275 * Otherwise, if we're printing packet information and the standard
2276 * output is a terminal (which we assume means the standard output and
2277 * error are going to the same terminal), don't print packet counts,
2278 * as they'll get in the way of the packet information.
2280 * Otherwise, if the user specified -q, don't print packet counts.
2282 * Otherwise, print packet counts.
2284 * XXX - what if the user wants to do a live capture, doesn't want
2285 * to save it to a file, doesn't want information printed for each
2286 * packet, does want some "-z" statistic, and wants packet counts
2287 * so they know whether they're seeing any packets? -q will
2288 * suppress the information printed for each packet, but it'll
2289 * also suppress the packet counts.
2291 if (!isatty(fileno(stderr)))
2292 print_packet_counts = FALSE;
2293 else if (print_packet_info && isatty(fileno(stdout)))
2294 print_packet_counts = FALSE;
2296 print_packet_counts = FALSE;
2298 print_packet_counts = TRUE;
2300 if (print_packet_info) {
2301 if (!write_preamble(&cfile)) {
2302 show_print_file_io_error(errno);
2307 tshark_debug0("tshark: performing live capture");
2309 * XXX - this returns FALSE if an error occurred, but it also
2310 * returns FALSE if the capture stops because a time limit
2311 * was reached (and possibly other limits), so we can't assume
2312 * it means an error.
2314 * The capture code is a bit twisty, so it doesn't appear to
2315 * be an easy fix. We just ignore the return value for now.
2316 * Instead, pass on the exit status from the capture child.
2319 exit_status = global_capture_session.fork_child_status;
2321 if (print_packet_info) {
2322 if (!write_finale()) {
2324 show_print_file_io_error(err);
2328 /* No - complain. */
2329 cmdarg_err("This version of TShark was not built with support for capturing packets.");
2336 if (cfile.frames != NULL) {
2337 free_frame_data_sequence(cfile.frames);
2338 cfile.frames = NULL;
2341 draw_tap_listeners(TRUE);
2342 funnel_dump_all_text_windows();
2343 epan_free(cfile.epan);
2346 output_fields_free(output_fields);
2347 output_fields = NULL;
2352 /*#define USE_BROKEN_G_MAIN_LOOP*/
2354 #ifdef USE_BROKEN_G_MAIN_LOOP
2357 gboolean loop_running = FALSE;
2359 guint32 packet_count = 0;
2362 typedef struct pipe_input_tag {
2365 ws_process_id *child_process;
2366 pipe_input_cb_t input_cb;
2367 guint pipe_input_id;
2369 GMutex *callback_running;
2373 static pipe_input_t pipe_input;
2376 /* The timer has expired, see if there's stuff to read from the pipe,
2377 if so, do the callback */
2379 pipe_timer_cb(gpointer data)
2385 pipe_input_t *pipe_input_p = data;
2386 gint iterations = 0;
2388 g_mutex_lock (pipe_input_p->callback_running);
2390 /* try to read data from the pipe only 5 times, to avoid blocking */
2391 while(iterations < 5) {
2392 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
2394 /* Oddly enough although Named pipes don't work on win9x,
2395 PeekNamedPipe does !!! */
2396 handle = (HANDLE) _get_osfhandle (pipe_input_p->source);
2397 result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
2399 /* Get the child process exit status */
2400 GetExitCodeProcess((HANDLE)*(pipe_input_p->child_process),
2403 /* If the Peek returned an error, or there are bytes to be read
2404 or the childwatcher thread has terminated then call the normal
2406 if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
2408 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
2410 /* And call the real handler */
2411 if (!pipe_input_p->input_cb(pipe_input_p->source, pipe_input_p->user_data)) {
2412 g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
2413 /* pipe closed, return false so that the timer is stopped */
2414 g_mutex_unlock (pipe_input_p->callback_running);
2419 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
2420 /* No data, stop now */
2427 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
2429 g_mutex_unlock (pipe_input_p->callback_running);
2431 /* we didn't stopped the timer, so let it run */
2438 pipe_input_set_handler(gint source, gpointer user_data, ws_process_id *child_process, pipe_input_cb_t input_cb)
2441 pipe_input.source = source;
2442 pipe_input.child_process = child_process;
2443 pipe_input.user_data = user_data;
2444 pipe_input.input_cb = input_cb;
2447 #if GLIB_CHECK_VERSION(2,31,0)
2448 pipe_input.callback_running = g_malloc(sizeof(GMutex));
2449 g_mutex_init(pipe_input.callback_running);
2451 pipe_input.callback_running = g_mutex_new();
2453 /* Tricky to use pipes in win9x, as no concept of wait. NT can
2454 do this but that doesn't cover all win32 platforms. GTK can do
2455 this but doesn't seem to work over processes. Attempt to do
2456 something similar here, start a timer and check for data on every
2458 /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
2459 pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
2463 static const nstime_t *
2464 tshark_get_frame_ts(void *data, guint32 frame_num)
2466 capture_file *cf = (capture_file *) data;
2468 if (ref && ref->num == frame_num)
2469 return &ref->abs_ts;
2471 if (prev_dis && prev_dis->num == frame_num)
2472 return &prev_dis->abs_ts;
2474 if (prev_cap && prev_cap->num == frame_num)
2475 return &prev_cap->abs_ts;
2478 frame_data *fd = frame_data_sequence_find(cf->frames, frame_num);
2480 return (fd) ? &fd->abs_ts : NULL;
2487 tshark_epan_new(capture_file *cf)
2489 epan_t *epan = epan_new();
2492 epan->get_frame_ts = tshark_get_frame_ts;
2493 epan->get_interface_name = cap_file_get_interface_name;
2494 epan->get_user_comment = NULL;
2506 #ifdef USE_TSHARK_SELECT
2510 struct sigaction action, oldaction;
2513 /* Create new dissection section. */
2514 epan_free(cfile.epan);
2515 cfile.epan = tshark_epan_new(&cfile);
2518 /* Catch a CTRL+C event and, if we get it, clean up and exit. */
2519 SetConsoleCtrlHandler(capture_cleanup, TRUE);
2521 /* Catch SIGINT and SIGTERM and, if we get either of them,
2522 clean up and exit. If SIGHUP isn't being ignored, catch
2523 it too and, if we get it, clean up and exit.
2525 We restart any read that was in progress, so that it doesn't
2526 disrupt reading from the sync pipe. The signal handler tells
2527 the capture child to finish; it will report that it finished,
2528 or will exit abnormally, so we'll stop reading from the sync
2529 pipe, pick up the exit status, and quit. */
2530 memset(&action, 0, sizeof(action));
2531 action.sa_handler = capture_cleanup;
2532 action.sa_flags = SA_RESTART;
2533 sigemptyset(&action.sa_mask);
2534 sigaction(SIGTERM, &action, NULL);
2535 sigaction(SIGINT, &action, NULL);
2536 sigaction(SIGHUP, NULL, &oldaction);
2537 if (oldaction.sa_handler == SIG_DFL)
2538 sigaction(SIGHUP, &action, NULL);
2541 /* Catch SIGINFO and, if we get it and we're capturing to a file in
2542 quiet mode, report the number of packets we've captured.
2544 Again, restart any read that was in progress, so that it doesn't
2545 disrupt reading from the sync pipe. */
2546 action.sa_handler = report_counts_siginfo;
2547 action.sa_flags = SA_RESTART;
2548 sigemptyset(&action.sa_mask);
2549 sigaction(SIGINFO, &action, NULL);
2550 #endif /* SIGINFO */
2553 global_capture_session.state = CAPTURE_PREPARING;
2555 /* Let the user know which interfaces were chosen. */
2556 for (i = 0; i < global_capture_opts.ifaces->len; i++) {
2557 interface_options interface_opts;
2559 interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
2560 interface_opts.descr = get_interface_descriptive_name(interface_opts.name);
2561 global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
2562 g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
2564 str = get_iface_list_string(&global_capture_opts, IFLIST_QUOTE_IF_DESCRIPTION);
2565 if (really_quiet == FALSE)
2566 fprintf(stderr, "Capturing on %s\n", str->str);
2568 g_string_free(str, TRUE);
2570 ret = sync_pipe_start(&global_capture_opts, &global_capture_session, NULL);
2575 /* the actual capture loop
2577 * XXX - glib doesn't seem to provide any event based loop handling.
2579 * XXX - for whatever reason,
2580 * calling g_main_loop_new() ends up in 100% cpu load.
2582 * But that doesn't matter: in UNIX we can use select() to find an input
2583 * source with something to do.
2585 * But that doesn't matter because we're in a CLI (that doesn't need to
2586 * update a GUI or something at the same time) so it's OK if we block
2587 * trying to read from the pipe.
2589 * So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
2590 * wrong (but I leave it there in case I am...).
2593 #ifdef USE_TSHARK_SELECT
2595 FD_SET(pipe_input.source, &readfds);
2598 loop_running = TRUE;
2602 while (loop_running)
2604 #ifdef USE_TSHARK_SELECT
2605 ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
2609 fprintf(stderr, "%s: %s\n", "select()", g_strerror(errno));
2611 } else if (ret == 1) {
2613 /* Call the real handler */
2614 if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
2615 g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
2618 #ifdef USE_TSHARK_SELECT
2623 CATCH(OutOfMemoryError) {
2627 "Sorry, but TShark has to terminate now.\n"
2629 "More information and workarounds can be found at\n"
2630 "https://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
2637 /* capture child detected an error */
2639 capture_input_error_message(capture_session *cap_session _U_, char *error_msg, char *secondary_error_msg)
2641 cmdarg_err("%s", error_msg);
2642 cmdarg_err_cont("%s", secondary_error_msg);
2646 /* capture child detected an capture filter related error */
2648 capture_input_cfilter_error_message(capture_session *cap_session, guint i, char *error_message)
2650 capture_options *capture_opts = cap_session->capture_opts;
2651 dfilter_t *rfcode = NULL;
2652 interface_options interface_opts;
2654 g_assert(i < capture_opts->ifaces->len);
2655 interface_opts = g_array_index(capture_opts->ifaces, interface_options, i);
2657 if (dfilter_compile(interface_opts.cfilter, &rfcode, NULL) && rfcode != NULL) {
2659 "Invalid capture filter \"%s\" for interface '%s'.\n"
2661 "That string looks like a valid display filter; however, it isn't a valid\n"
2662 "capture filter (%s).\n"
2664 "Note that display filters and capture filters don't have the same syntax,\n"
2665 "so you can't use most display filter expressions as capture filters.\n"
2667 "See the User's Guide for a description of the capture filter syntax.",
2668 interface_opts.cfilter, interface_opts.descr, error_message);
2669 dfilter_free(rfcode);
2672 "Invalid capture filter \"%s\" for interface '%s'.\n"
2674 "That string isn't a valid capture filter (%s).\n"
2675 "See the User's Guide for a description of the capture filter syntax.",
2676 interface_opts.cfilter, interface_opts.descr, error_message);
2681 /* capture child tells us we have a new (or the first) capture file */
2683 capture_input_new_file(capture_session *cap_session, gchar *new_file)
2685 capture_options *capture_opts = cap_session->capture_opts;
2686 capture_file *cf = (capture_file *) cap_session->cf;
2687 gboolean is_tempfile;
2690 if (cap_session->state == CAPTURE_PREPARING) {
2691 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started.");
2693 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
2695 g_assert(cap_session->state == CAPTURE_PREPARING || cap_session->state == CAPTURE_RUNNING);
2697 /* free the old filename */
2698 if (capture_opts->save_file != NULL) {
2700 /* we start a new capture file, close the old one (if we had one before) */
2701 if (cf->state != FILE_CLOSED) {
2702 if (cf->wth != NULL) {
2703 wtap_close(cf->wth);
2706 cf->state = FILE_CLOSED;
2709 g_free(capture_opts->save_file);
2710 is_tempfile = FALSE;
2712 epan_free(cf->epan);
2713 cf->epan = tshark_epan_new(cf);
2715 /* we didn't had a save_file before, must be a tempfile */
2719 /* save the new filename */
2720 capture_opts->save_file = g_strdup(new_file);
2722 /* if we are in real-time mode, open the new file now */
2723 if (do_dissection) {
2724 /* this is probably unecessary, but better safe than sorry */
2725 ((capture_file *)cap_session->cf)->open_type = WTAP_TYPE_AUTO;
2726 /* Attempt to open the capture file and set up to read from it. */
2727 switch(cf_open((capture_file *)cap_session->cf, capture_opts->save_file, WTAP_TYPE_AUTO, is_tempfile, &err)) {
2731 /* Don't unlink (delete) the save file - leave it around,
2732 for debugging purposes. */
2733 g_free(capture_opts->save_file);
2734 capture_opts->save_file = NULL;
2739 cap_session->state = CAPTURE_RUNNING;
2745 /* capture child tells us we have new packets to read */
2747 capture_input_new_packets(capture_session *cap_session, int to_read)
2753 capture_file *cf = (capture_file *)cap_session->cf;
2754 gboolean filtering_tap_listeners;
2759 * Prevent a SIGINFO handler from writing to the standard error while
2760 * we're doing so or writing to the standard output; instead, have it
2761 * just set a flag telling us to print that information when we're done.
2764 #endif /* SIGINFO */
2766 /* Do we have any tap listeners with filters? */
2767 filtering_tap_listeners = have_filtering_tap_listeners();
2769 /* Get the union of the flags for all tap listeners. */
2770 tap_flags = union_of_tap_listener_flags();
2772 if (do_dissection) {
2773 gboolean create_proto_tree;
2774 epan_dissect_t *edt;
2776 if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
2777 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
2778 create_proto_tree = TRUE;
2780 create_proto_tree = FALSE;
2782 /* The protocol tree will be "visible", i.e., printed, only if we're
2783 printing packet details, which is true if we're printing stuff
2784 ("print_packet_info" is true) and we're in verbose mode
2785 ("packet_details" is true). */
2786 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
2788 while (to_read-- && cf->wth) {
2789 wtap_cleareof(cf->wth);
2790 ret = wtap_read(cf->wth, &err, &err_info, &data_offset);
2792 /* read from file failed, tell the capture child to stop */
2793 sync_pipe_stop(cap_session);
2794 wtap_close(cf->wth);
2797 ret = process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
2798 wtap_buf_ptr(cf->wth),
2802 /* packet successfully read and gone through the "Read Filter" */
2807 epan_dissect_free(edt);
2811 * Dumpcap's doing all the work; we're not doing any dissection.
2812 * Count all the packets it wrote.
2814 packet_count += to_read;
2817 if (print_packet_counts) {
2818 /* We're printing packet counts. */
2819 if (packet_count != 0) {
2820 fprintf(stderr, "\r%u ", packet_count);
2821 /* stderr could be line buffered */
2828 * Allow SIGINFO handlers to write.
2833 * If a SIGINFO handler asked us to write out capture counts, do so.
2837 #endif /* SIGINFO */
2843 if ((print_packet_counts == FALSE) && (really_quiet == FALSE)) {
2844 /* Report the count only if we aren't printing a packet count
2845 as packets arrive. */
2846 fprintf(stderr, "%u packet%s captured\n", packet_count,
2847 plurality(packet_count, "", "s"));
2850 infoprint = FALSE; /* we just reported it */
2851 #endif /* SIGINFO */
2856 report_counts_siginfo(int signum _U_)
2858 int sav_errno = errno;
2859 /* If we've been told to delay printing, just set a flag asking
2860 that we print counts (if we're supposed to), otherwise print
2861 the count of packets captured (if we're supposed to). */
2868 #endif /* SIGINFO */
2871 /* capture child detected any packet drops? */
2873 capture_input_drops(capture_session *cap_session _U_, guint32 dropped)
2875 if (print_packet_counts) {
2876 /* We're printing packet counts to stderr.
2877 Send a newline so that we move to the line after the packet count. */
2878 fprintf(stderr, "\n");
2882 /* We're printing packet counts to stderr.
2883 Send a newline so that we move to the line after the packet count. */
2884 fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
2890 * Capture child closed its side of the pipe, report any error and
2891 * do the required cleanup.
2894 capture_input_closed(capture_session *cap_session, gchar *msg)
2896 capture_file *cf = (capture_file *) cap_session->cf;
2899 fprintf(stderr, "tshark: %s\n", msg);
2903 if (cf != NULL && cf->wth != NULL) {
2904 wtap_close(cf->wth);
2905 if (cf->is_tempfile) {
2906 ws_unlink(cf->filename);
2909 #ifdef USE_BROKEN_G_MAIN_LOOP
2910 /*g_main_loop_quit(loop);*/
2911 g_main_loop_quit(loop);
2913 loop_running = FALSE;
2922 capture_cleanup(DWORD ctrltype _U_)
2924 /* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
2925 Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
2926 is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
2927 like SIGTERM at least when the machine's shutting down.
2929 For now, we handle them all as indications that we should clean up
2930 and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
2933 We must return TRUE so that no other handler - such as one that would
2934 terminate the process - gets called.
2936 XXX - for some reason, typing ^C to TShark, if you run this in
2937 a Cygwin console window in at least some versions of Cygwin,
2938 causes TShark to terminate immediately; this routine gets
2939 called, but the main loop doesn't get a chance to run and
2940 exit cleanly, at least if this is compiled with Microsoft Visual
2941 C++ (i.e., it's a property of the Cygwin console window or Bash;
2942 it happens if TShark is not built with Cygwin - for all I know,
2943 building it with Cygwin may make the problem go away). */
2945 /* tell the capture child to stop */
2946 sync_pipe_stop(&global_capture_session);
2948 /* don't stop our own loop already here, otherwise status messages and
2949 * cleanup wouldn't be done properly. The child will indicate the stop of
2950 * everything by calling capture_input_closed() later */
2956 capture_cleanup(int signum _U_)
2958 /* tell the capture child to stop */
2959 sync_pipe_stop(&global_capture_session);
2961 /* don't stop our own loop already here, otherwise status messages and
2962 * cleanup wouldn't be done properly. The child will indicate the stop of
2963 * everything by calling capture_input_closed() later */
2966 #endif /* HAVE_LIBPCAP */
2969 process_packet_first_pass(capture_file *cf, epan_dissect_t *edt,
2970 gint64 offset, struct wtap_pkthdr *whdr,
2977 /* The frame number of this packet is one more than the count of
2978 frames in this packet. */
2979 framenum = cf->count + 1;
2981 /* If we're not running a display filter and we're not printing any
2982 packet information, we don't need to do a dissection. This means
2983 that all packets can be marked as 'passed'. */
2986 frame_data_init(&fdlocal, framenum, whdr, offset, cum_bytes);
2988 /* If we're going to print packet information, or we're going to
2989 run a read filter, or display filter, or we're going to process taps, set up to
2990 do a dissection and do so. */
2992 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
2993 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
2994 /* Grab any resolved addresses */
2995 host_name_lookup_process();
2997 /* If we're running a read filter, prime the epan_dissect_t with that
3000 epan_dissect_prime_dfilter(edt, cf->rfcode);
3003 epan_dissect_prime_dfilter(edt, cf->dfcode);
3005 frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
3007 if (ref == &fdlocal) {
3008 ref_frame = fdlocal;
3012 epan_dissect_run(edt, cf->cd_t, whdr, frame_tvbuff_new(&fdlocal, pd), &fdlocal, NULL);
3014 /* Run the read filter if we have one. */
3016 passed = dfilter_apply_edt(cf->rfcode, edt);
3020 frame_data_set_after_dissect(&fdlocal, &cum_bytes);
3021 prev_cap = prev_dis = frame_data_sequence_add(cf->frames, &fdlocal);
3023 /* If we're not doing dissection then there won't be any dependent frames.
3024 * More importantly, edt.pi.dependent_frames won't be initialized because
3025 * epan hasn't been initialized.
3026 * if we *are* doing dissection, then mark the dependent frames, but only
3027 * if a display filter was given and it matches this packet.
3029 if (edt && cf->dfcode) {
3030 if (dfilter_apply_edt(cf->dfcode, edt)) {
3031 g_slist_foreach(edt->pi.dependent_frames, find_and_mark_frame_depended_upon, cf->frames);
3037 /* if we don't add it to the frame_data_sequence, clean it up right now
3039 frame_data_destroy(&fdlocal);
3043 epan_dissect_reset(edt);
3049 process_packet_second_pass(capture_file *cf, epan_dissect_t *edt, frame_data *fdata,
3050 struct wtap_pkthdr *phdr, Buffer *buf,
3056 /* If we're not running a display filter and we're not printing any
3057 packet information, we don't need to do a dissection. This means
3058 that all packets can be marked as 'passed'. */
3061 /* If we're going to print packet information, or we're going to
3062 run a read filter, or we're going to process taps, set up to
3063 do a dissection and do so. */
3065 if (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
3066 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
3067 /* Grab any resolved addresses */
3068 host_name_lookup_process();
3070 /* If we're running a display filter, prime the epan_dissect_t with that
3073 epan_dissect_prime_dfilter(edt, cf->dfcode);
3075 col_custom_prime_edt(edt, &cf->cinfo);
3077 /* We only need the columns if either
3078 1) some tap needs the columns
3080 2) we're printing packet info but we're *not* verbose; in verbose
3081 mode, we print the protocol tree, not the protocol summary.
3083 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3088 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
3095 epan_dissect_run_with_taps(edt, cf->cd_t, phdr, frame_tvbuff_new_buffer(fdata, buf), fdata, cinfo);
3097 /* Run the read/display filter if we have one. */
3099 passed = dfilter_apply_edt(cf->dfcode, edt);
3103 frame_data_set_after_dissect(fdata, &cum_bytes);
3104 /* Process this packet. */
3105 if (print_packet_info) {
3106 /* We're printing packet information; print the information for
3108 print_packet(cf, edt);
3110 /* The ANSI C standard does not appear to *require* that a line-buffered
3111 stream be flushed to the host environment whenever a newline is
3112 written, it just says that, on such a stream, characters "are
3113 intended to be transmitted to or from the host environment as a
3114 block when a new-line character is encountered".
3116 The Visual C++ 6.0 C implementation doesn't do what is intended;
3117 even if you set a stream to be line-buffered, it still doesn't
3118 flush the buffer at the end of every line.
3120 So, if the "-l" flag was specified, we flush the standard output
3121 at the end of a packet. This will do the right thing if we're
3122 printing packet summary lines, and, as we print the entire protocol
3123 tree for a single packet without waiting for anything to happen,
3124 it should be as good as line-buffered mode if we're printing
3125 protocol trees. (The whole reason for the "-l" flag in either
3126 tcpdump or TShark is to allow the output of a live capture to
3127 be piped to a program or script and to have that script see the
3128 information for the packet as soon as it's printed, rather than
3129 having to wait until a standard I/O buffer fills up. */
3133 if (ferror(stdout)) {
3134 show_print_file_io_error(errno);
3143 epan_dissect_reset(edt);
3145 return passed || fdata->flags.dependent_of_displayed;
3149 load_cap_file(capture_file *cf, char *save_file, int out_file_type,
3150 gboolean out_file_name_res, int max_packet_count, gint64 max_byte_count)
3153 int snapshot_length;
3157 gchar *err_info = NULL;
3159 char *save_file_string = NULL;
3160 gboolean filtering_tap_listeners;
3162 wtapng_section_t *shb_hdr = NULL;
3163 wtapng_iface_descriptions_t *idb_inf = NULL;
3164 wtapng_name_res_t *nrb_hdr = NULL;
3165 struct wtap_pkthdr phdr;
3167 epan_dissect_t *edt = NULL;
3169 wtap_phdr_init(&phdr);
3171 idb_inf = wtap_file_get_idb_info(cf->wth);
3172 #ifdef PCAP_NG_DEFAULT
3173 if (idb_inf->interface_data->len > 1) {
3174 linktype = WTAP_ENCAP_PER_PACKET;
3176 linktype = wtap_file_encap(cf->wth);
3179 linktype = wtap_file_encap(cf->wth);
3181 if (save_file != NULL) {
3182 /* Get a string that describes what we're writing to */
3183 save_file_string = output_file_description(save_file);
3185 /* Set up to write to the capture file. */
3186 snapshot_length = wtap_snapshot_length(cf->wth);
3187 if (snapshot_length == 0) {
3188 /* Snapshot length of input file not known. */
3189 snapshot_length = WTAP_MAX_PACKET_SIZE;
3191 tshark_debug1("tshark: snapshot_length = %d", snapshot_length);
3193 shb_hdr = wtap_file_get_shb_for_new_file(cf->wth);
3194 nrb_hdr = wtap_file_get_nrb_for_new_file(cf->wth);
3196 /* If we don't have an application name add Tshark */
3197 if (shb_hdr->shb_user_appl == NULL) {
3198 /* this is free'd by wtap_free_shb() later */
3199 shb_hdr->shb_user_appl = g_strdup_printf("TShark (Wireshark) %s", get_ws_vcs_version_info());
3202 if (linktype != WTAP_ENCAP_PER_PACKET &&
3203 out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAP) {
3204 tshark_debug1("tshark: writing PCAP format to %s", save_file);
3205 pdh = wtap_dump_open(save_file, out_file_type, linktype,
3206 snapshot_length, FALSE /* compressed */, &err);
3209 tshark_debug2("tshark: writing format type %d, to %s", out_file_type, save_file);
3210 pdh = wtap_dump_open_ng(save_file, out_file_type, linktype,
3211 snapshot_length, FALSE /* compressed */, shb_hdr, idb_inf, nrb_hdr, &err);
3218 /* We couldn't set up to write to the capture file. */
3221 case WTAP_ERR_UNWRITABLE_FILE_TYPE:
3222 cmdarg_err("Capture files can't be written in that format.");
3225 case WTAP_ERR_UNWRITABLE_ENCAP:
3226 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
3227 cmdarg_err("The capture file being read can't be written as a "
3228 "\"%s\" file.", wtap_file_type_subtype_short_string(out_file_type));
3231 case WTAP_ERR_CANT_OPEN:
3232 cmdarg_err("The %s couldn't be created for some "
3233 "unknown reason.", save_file_string);
3236 case WTAP_ERR_SHORT_WRITE:
3237 cmdarg_err("A full header couldn't be written to the %s.",
3242 cmdarg_err("The %s could not be created: %s.", save_file_string,
3243 wtap_strerror(err));
3249 if (print_packet_info) {
3250 if (!write_preamble(cf)) {
3252 show_print_file_io_error(err);
3261 /* Do we have any tap listeners with filters? */
3262 filtering_tap_listeners = have_filtering_tap_listeners();
3264 /* Get the union of the flags for all tap listeners. */
3265 tap_flags = union_of_tap_listener_flags();
3267 if (perform_two_pass_analysis) {
3270 tshark_debug1("tshark: perform_two_pass_analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
3272 /* Allocate a frame_data_sequence for all the frames. */
3273 cf->frames = new_frame_data_sequence();
3275 if (do_dissection) {
3276 gboolean create_proto_tree = FALSE;
3278 /* If we're going to be applying a filter, we'll need to
3279 create a protocol tree against which to apply the filter. */
3280 if (cf->rfcode || cf->dfcode)
3281 create_proto_tree = TRUE;
3283 tshark_debug1("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3285 /* We're not going to display the protocol tree on this pass,
3286 so it's not going to be "visible". */
3287 edt = epan_dissect_new(cf->epan, create_proto_tree, FALSE);
3290 tshark_debug0("tshark: reading records for first pass");
3291 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
3292 if (process_packet_first_pass(cf, edt, data_offset, wtap_phdr(cf->wth),
3293 wtap_buf_ptr(cf->wth))) {
3294 /* Stop reading if we have the maximum number of packets;
3295 * When the -c option has not been used, max_packet_count
3296 * starts at 0, which practically means, never stop reading.
3297 * (unless we roll over max_packet_count ?)
3299 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3300 tshark_debug3("tshark: max_packet_count (%d) or max_byte_count (%" G_GINT64_MODIFIER "d/%" G_GINT64_MODIFIER "d) reached",
3301 max_packet_count, data_offset, max_byte_count);
3302 err = 0; /* This is not an error */
3309 epan_dissect_free(edt);
3313 /* Close the sequential I/O side, to free up memory it requires. */
3314 wtap_sequential_close(cf->wth);
3316 /* Allow the protocol dissectors to free up memory that they
3317 * don't need after the sequential run-through of the packets. */
3318 postseq_cleanup_all_protocols();
3322 ws_buffer_init(&buf, 1500);
3324 tshark_debug0("tshark: done with first pass");
3326 if (do_dissection) {
3327 gboolean create_proto_tree;
3329 if (cf->dfcode || print_details || filtering_tap_listeners ||
3330 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3331 create_proto_tree = TRUE;
3333 create_proto_tree = FALSE;
3335 tshark_debug1("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3337 /* The protocol tree will be "visible", i.e., printed, only if we're
3338 printing packet details, which is true if we're printing stuff
3339 ("print_packet_info" is true) and we're in verbose mode
3340 ("packet_details" is true). */
3341 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3344 for (framenum = 1; err == 0 && framenum <= cf->count; framenum++) {
3345 fdata = frame_data_sequence_find(cf->frames, framenum);
3346 if (wtap_seek_read(cf->wth, fdata->file_off, &phdr, &buf, &err,
3348 tshark_debug1("tshark: invoking process_packet_second_pass() for frame #%d", framenum);
3349 if (process_packet_second_pass(cf, edt, fdata, &phdr, &buf,
3351 /* Either there's no read filtering or this packet passed the
3352 filter, so, if we're writing to a capture file, write
3355 tshark_debug1("tshark: writing packet #%d to outfile", framenum);
3356 if (!wtap_dump(pdh, &phdr, ws_buffer_start_ptr(&buf), &err, &err_info)) {
3357 /* Error writing to a capture file */
3358 tshark_debug1("tshark: error writing to a capture file (%d)", err);
3361 case WTAP_ERR_UNWRITABLE_ENCAP:
3363 * This is a problem with the particular frame we're writing
3364 * and the file type and subtype we're writing; note that,
3365 * and report the frame number and file type/subtype.
3367 * XXX - framenum is not necessarily the frame number in
3368 * the input file if there was a read filter.
3371 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
3372 framenum, cf->filename,
3373 wtap_file_type_subtype_short_string(out_file_type));
3376 case WTAP_ERR_PACKET_TOO_LARGE:
3378 * This is a problem with the particular frame we're writing
3379 * and the file type and subtype we're writing; note that,
3380 * and report the frame number and file type/subtype.
3382 * XXX - framenum is not necessarily the frame number in
3383 * the input file if there was a read filter.
3386 "Frame %u of \"%s\" is too large for a \"%s\" file.\n",
3387 framenum, cf->filename,
3388 wtap_file_type_subtype_short_string(out_file_type));
3391 case WTAP_ERR_UNWRITABLE_REC_TYPE:
3393 * This is a problem with the particular record we're writing
3394 * and the file type and subtype we're writing; note that,
3395 * and report the record number and file type/subtype.
3397 * XXX - framenum is not necessarily the record number in
3398 * the input file if there was a read filter.
3401 "Record %u of \"%s\" has a record type that can't be saved in a \"%s\" file.\n",
3402 framenum, cf->filename,
3403 wtap_file_type_subtype_short_string(out_file_type));
3406 case WTAP_ERR_UNWRITABLE_REC_DATA:
3408 * This is a problem with the particular record we're writing
3409 * and the file type and subtype we're writing; note that,
3410 * and report the record number and file type/subtype.
3412 * XXX - framenum is not necessarily the record number in
3413 * the input file if there was a read filter.
3416 "Record %u of \"%s\" has data that can't be saved in a \"%s\" file.\n(%s)\n",
3417 framenum, cf->filename,
3418 wtap_file_type_subtype_short_string(out_file_type),
3419 err_info != NULL ? err_info : "no information supplied");
3424 show_capture_file_io_error(save_file, err, FALSE);
3427 wtap_dump_close(pdh, &err);
3428 wtap_free_shb(shb_hdr);
3429 wtap_free_nrb(nrb_hdr);
3438 epan_dissect_free(edt);
3442 ws_buffer_free(&buf);
3444 tshark_debug0("tshark: done with second pass");
3447 /* !perform_two_pass_analysis */
3450 tshark_debug1("tshark: perform one pass analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
3452 if (do_dissection) {
3453 gboolean create_proto_tree;
3455 if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
3456 (tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
3457 create_proto_tree = TRUE;
3459 create_proto_tree = FALSE;
3461 tshark_debug1("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
3463 /* The protocol tree will be "visible", i.e., printed, only if we're
3464 printing packet details, which is true if we're printing stuff
3465 ("print_packet_info" is true) and we're in verbose mode
3466 ("packet_details" is true). */
3467 edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
3470 while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
3473 tshark_debug1("tshark: processing packet #%d", framenum);
3475 if (process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
3476 wtap_buf_ptr(cf->wth),
3478 /* Either there's no read filtering or this packet passed the
3479 filter, so, if we're writing to a capture file, write
3482 tshark_debug1("tshark: writing packet #%d to outfile", framenum);
3483 if (!wtap_dump(pdh, wtap_phdr(cf->wth), wtap_buf_ptr(cf->wth), &err, &err_info)) {
3484 /* Error writing to a capture file */
3485 tshark_debug1("tshark: error writing to a capture file (%d)", err);
3488 case WTAP_ERR_UNWRITABLE_ENCAP:
3490 * This is a problem with the particular frame we're writing
3491 * and the file type and subtype we're writing; note that,
3492 * and report the frame number and file type/subtype.
3495 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
3496 framenum, cf->filename,
3497 wtap_file_type_subtype_short_string(out_file_type));
3500 case WTAP_ERR_PACKET_TOO_LARGE:
3502 * This is a problem with the particular frame we're writing
3503 * and the file type and subtype we're writing; note that,
3504 * and report the frame number and file type/subtype.
3507 "Frame %u of \"%s\" is too large for a \"%s\" file.\n",
3508 framenum, cf->filename,
3509 wtap_file_type_subtype_short_string(out_file_type));
3512 case WTAP_ERR_UNWRITABLE_REC_TYPE:
3514 * This is a problem with the particular record we're writing
3515 * and the file type and subtype we're writing; note that,
3516 * and report the record number and file type/subtype.
3519 "Record %u of \"%s\" has a record type that can't be saved in a \"%s\" file.\n",
3520 framenum, cf->filename,
3521 wtap_file_type_subtype_short_string(out_file_type));
3524 case WTAP_ERR_UNWRITABLE_REC_DATA:
3526 * This is a problem with the particular record we're writing
3527 * and the file type and subtype we're writing; note that,
3528 * and report the record number and file type/subtype.
3531 "Record %u of \"%s\" has data that can't be saved in a \"%s\" file.\n(%s)\n",
3532 framenum, cf->filename,
3533 wtap_file_type_subtype_short_string(out_file_type),
3534 err_info != NULL ? err_info : "no information supplied");
3539 show_capture_file_io_error(save_file, err, FALSE);
3542 wtap_dump_close(pdh, &err);
3543 wtap_free_shb(shb_hdr);
3544 wtap_free_nrb(nrb_hdr);
3549 /* Stop reading if we have the maximum number of packets;
3550 * When the -c option has not been used, max_packet_count
3551 * starts at 0, which practically means, never stop reading.
3552 * (unless we roll over max_packet_count ?)
3554 if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
3555 tshark_debug3("tshark: max_packet_count (%d) or max_byte_count (%" G_GINT64_MODIFIER "d/%" G_GINT64_MODIFIER "d) reached",
3556 max_packet_count, data_offset, max_byte_count);
3557 err = 0; /* This is not an error */
3563 epan_dissect_free(edt);
3568 wtap_phdr_cleanup(&phdr);
3571 tshark_debug1("tshark: something failed along the line (%d)", err);
3573 * Print a message noting that the read failed somewhere along the line.
3575 * If we're printing packet data, and the standard output and error are
3576 * going to the same place, flush the standard output, so everything
3577 * buffered up is written, and then print a newline to the standard error
3578 * before printing the error message, to separate it from the packet
3579 * data. (Alas, that only works on UN*X; st_dev is meaningless, and
3580 * the _fstat() documentation at Microsoft doesn't indicate whether
3581 * st_ino is even supported.)
3584 if (print_packet_info) {
3585 ws_statb64 stat_stdout, stat_stderr;
3587 if (ws_fstat64(1, &stat_stdout) == 0 && ws_fstat64(2, &stat_stderr) == 0) {
3588 if (stat_stdout.st_dev == stat_stderr.st_dev &&
3589 stat_stdout.st_ino == stat_stderr.st_ino) {
3591 fprintf(stderr, "\n");
3598 case WTAP_ERR_UNSUPPORTED:
3599 cmdarg_err("The file \"%s\" contains record data that TShark doesn't support.\n(%s)",
3601 err_info != NULL ? err_info : "no information supplied");
3605 case WTAP_ERR_SHORT_READ:
3606 cmdarg_err("The file \"%s\" appears to have been cut short in the middle of a packet.",
3610 case WTAP_ERR_BAD_FILE:
3611 cmdarg_err("The file \"%s\" appears to be damaged or corrupt.\n(%s)",
3613 err_info != NULL ? err_info : "no information supplied");
3617 case WTAP_ERR_DECOMPRESS:
3618 cmdarg_err("The compressed file \"%s\" appears to be damaged or corrupt.\n"
3619 "(%s)", cf->filename,
3620 err_info != NULL ? err_info : "no information supplied");
3625 cmdarg_err("An error occurred while reading the file \"%s\": %s.",
3626 cf->filename, wtap_strerror(err));
3629 if (save_file != NULL) {
3630 /* Now close the capture file. */
3631 if (!wtap_dump_close(pdh, &err))
3632 show_capture_file_io_error(save_file, err, TRUE);
3635 if (save_file != NULL) {
3636 if (pdh && out_file_name_res) {
3637 if (!wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list())) {
3638 cmdarg_err("The file format \"%s\" doesn't support name resolution information.",
3639 wtap_file_type_subtype_short_string(out_file_type));
3642 /* Now close the capture file. */
3643 if (!wtap_dump_close(pdh, &err))
3644 show_capture_file_io_error(save_file, err, TRUE);
3646 if (print_packet_info) {
3647 if (!write_finale()) {
3649 show_print_file_io_error(err);
3656 wtap_close(cf->wth);
3659 g_free(save_file_string);
3660 wtap_free_shb(shb_hdr);
3661 wtap_free_nrb(nrb_hdr);
3667 process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset, struct wtap_pkthdr *whdr,
3668 const guchar *pd, guint tap_flags)
3674 /* Count this packet. */
3677 /* If we're not running a display filter and we're not printing any
3678 packet information, we don't need to do a dissection. This means
3679 that all packets can be marked as 'passed'. */
3682 frame_data_init(&fdata, cf->count, whdr, offset, cum_bytes);
3684 /* If we're going to print packet information, or we're going to
3685 run a read filter, or we're going to process taps, set up to
3686 do a dissection and do so. */
3688 if (print_packet_info && (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
3689 gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns))
3690 /* Grab any resolved addresses */
3691 host_name_lookup_process();
3693 /* If we're running a filter, prime the epan_dissect_t with that
3696 epan_dissect_prime_dfilter(edt, cf->dfcode);
3698 col_custom_prime_edt(edt, &cf->cinfo);
3700 /* We only need the columns if either
3701 1) some tap needs the columns
3703 2) we're printing packet info but we're *not* verbose; in verbose
3704 mode, we print the protocol tree, not the protocol summary.
3706 3) there is a column mapped as an individual field */
3707 if ((tap_flags & TL_REQUIRES_COLUMNS) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
3712 frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
3714 if (ref == &fdata) {
3719 epan_dissect_run_with_taps(edt, cf->cd_t, whdr, frame_tvbuff_new(&fdata, pd), &fdata, cinfo);
3721 /* Run the filter if we have it. */
3723 passed = dfilter_apply_edt(cf->dfcode, edt);
3727 frame_data_set_after_dissect(&fdata, &cum_bytes);
3729 /* Process this packet. */
3730 if (print_packet_info) {
3731 /* We're printing packet information; print the information for
3733 print_packet(cf, edt);
3735 /* The ANSI C standard does not appear to *require* that a line-buffered
3736 stream be flushed to the host environment whenever a newline is
3737 written, it just says that, on such a stream, characters "are
3738 intended to be transmitted to or from the host environment as a
3739 block when a new-line character is encountered".
3741 The Visual C++ 6.0 C implementation doesn't do what is intended;
3742 even if you set a stream to be line-buffered, it still doesn't
3743 flush the buffer at the end of every line.
3745 So, if the "-l" flag was specified, we flush the standard output
3746 at the end of a packet. This will do the right thing if we're
3747 printing packet summary lines, and, as we print the entire protocol
3748 tree for a single packet without waiting for anything to happen,
3749 it should be as good as line-buffered mode if we're printing
3750 protocol trees. (The whole reason for the "-l" flag in either
3751 tcpdump or TShark is to allow the output of a live capture to
3752 be piped to a program or script and to have that script see the
3753 information for the packet as soon as it's printed, rather than
3754 having to wait until a standard I/O buffer fills up. */
3758 if (ferror(stdout)) {
3759 show_print_file_io_error(errno);
3764 /* this must be set after print_packet() [bug #8160] */
3765 prev_dis_frame = fdata;
3766 prev_dis = &prev_dis_frame;
3769 prev_cap_frame = fdata;
3770 prev_cap = &prev_cap_frame;
3773 epan_dissect_reset(edt);
3774 frame_data_destroy(&fdata);
3780 write_preamble(capture_file *cf)
3782 switch (output_action) {
3785 return print_preamble(print_stream, cf->filename, get_ws_vcs_version_info());
3789 write_pdml_preamble(stdout, cf->filename);
3791 write_psml_preamble(&cf->cinfo, stdout);
3792 return !ferror(stdout);
3795 write_fields_preamble(output_fields, stdout);
3796 return !ferror(stdout);
3799 g_assert_not_reached();
3805 get_line_buf(size_t len)
3807 static char *line_bufp = NULL;
3808 static size_t line_buf_len = 256;
3809 size_t new_line_buf_len;
3811 for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
3812 new_line_buf_len *= 2)
3814 if (line_bufp == NULL) {
3815 line_buf_len = new_line_buf_len;
3816 line_bufp = (char *)g_malloc(line_buf_len + 1);
3818 if (new_line_buf_len > line_buf_len) {
3819 line_buf_len = new_line_buf_len;
3820 line_bufp = (char *)g_realloc(line_bufp, line_buf_len + 1);
3827 put_string(char *dest, const char *str, size_t str_len)
3829 memcpy(dest, str, str_len);
3830 dest[str_len] = '\0';
3834 put_spaces_string(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3838 for (i = str_len; i < str_with_spaces; i++)
3841 put_string(dest, str, str_len);
3845 put_string_spaces(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
3849 memcpy(dest, str, str_len);
3850 for (i = str_len; i < str_with_spaces; i++)
3853 dest[str_with_spaces] = '\0';
3857 print_columns(capture_file *cf)
3864 col_item_t* col_item;
3866 line_bufp = get_line_buf(256);
3869 for (i = 0; i < cf->cinfo.num_cols; i++) {
3870 col_item = &cf->cinfo.columns[i];
3871 /* Skip columns not marked as visible. */
3872 if (!get_column_visible(i))
3874 switch (col_item->col_fmt) {
3876 column_len = col_len = strlen(col_item->col_data);
3879 line_bufp = get_line_buf(buf_offset + column_len);
3880 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3886 case COL_ABS_YMD_TIME: /* XXX - wider */
3887 case COL_ABS_YDOY_TIME: /* XXX - wider */
3889 case COL_UTC_YMD_TIME: /* XXX - wider */
3890 case COL_UTC_YDOY_TIME: /* XXX - wider */
3891 column_len = col_len = strlen(col_item->col_data);
3892 if (column_len < 10)
3894 line_bufp = get_line_buf(buf_offset + column_len);
3895 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3901 case COL_DEF_DL_SRC:
3902 case COL_RES_DL_SRC:
3903 case COL_UNRES_DL_SRC:
3904 case COL_DEF_NET_SRC:
3905 case COL_RES_NET_SRC:
3906 case COL_UNRES_NET_SRC:
3907 column_len = col_len = strlen(col_item->col_data);
3908 if (column_len < 12)
3910 line_bufp = get_line_buf(buf_offset + column_len);
3911 put_spaces_string(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3917 case COL_DEF_DL_DST:
3918 case COL_RES_DL_DST:
3919 case COL_UNRES_DL_DST:
3920 case COL_DEF_NET_DST:
3921 case COL_RES_NET_DST:
3922 case COL_UNRES_NET_DST:
3923 column_len = col_len = strlen(col_item->col_data);
3924 if (column_len < 12)
3926 line_bufp = get_line_buf(buf_offset + column_len);
3927 put_string_spaces(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
3931 column_len = strlen(col_item->col_data);
3932 line_bufp = get_line_buf(buf_offset + column_len);
3933 put_string(line_bufp + buf_offset, col_item->col_data, column_len);
3936 buf_offset += column_len;
3937 if (i != cf->cinfo.num_cols - 1) {
3939 * This isn't the last column, so we need to print a
3940 * separator between this column and the next.
3942 * If we printed a network source and are printing a
3943 * network destination of the same type next, separate
3944 * them with " -> "; if we printed a network destination
3945 * and are printing a network source of the same type
3946 * next, separate them with " <- "; otherwise separate them
3949 * We add enough space to the buffer for " <- " or " -> ",
3950 * even if we're only adding " ".
3952 line_bufp = get_line_buf(buf_offset + 4);
3953 switch (col_item->col_fmt) {
3958 switch (cf->cinfo.columns[i+1].col_fmt) {
3963 put_string(line_bufp + buf_offset, " -> ", 4);
3968 put_string(line_bufp + buf_offset, " ", 1);
3974 case COL_DEF_DL_SRC:
3975 case COL_RES_DL_SRC:
3976 case COL_UNRES_DL_SRC:
3977 switch (cf->cinfo.columns[i+1].col_fmt) {
3979 case COL_DEF_DL_DST:
3980 case COL_RES_DL_DST:
3981 case COL_UNRES_DL_DST:
3982 put_string(line_bufp + buf_offset, " -> ", 4);
3987 put_string(line_bufp + buf_offset, " ", 1);
3993 case COL_DEF_NET_SRC:
3994 case COL_RES_NET_SRC:
3995 case COL_UNRES_NET_SRC:
3996 switch (cf->cinfo.columns[i+1].col_fmt) {
3998 case COL_DEF_NET_DST:
3999 case COL_RES_NET_DST:
4000 case COL_UNRES_NET_DST:
4001 put_string(line_bufp + buf_offset, " -> ", 4);
4006 put_string(line_bufp + buf_offset, " ", 1);
4015 switch (cf->cinfo.columns[i+1].col_fmt) {
4020 put_string(line_bufp + buf_offset, " <- ", 4);
4025 put_string(line_bufp + buf_offset, " ", 1);
4031 case COL_DEF_DL_DST:
4032 case COL_RES_DL_DST:
4033 case COL_UNRES_DL_DST:
4034 switch (cf->cinfo.columns[i+1].col_fmt) {
4036 case COL_DEF_DL_SRC:
4037 case COL_RES_DL_SRC:
4038 case COL_UNRES_DL_SRC:
4039 put_string(line_bufp + buf_offset, " <- ", 4);
4044 put_string(line_bufp + buf_offset, " ", 1);
4050 case COL_DEF_NET_DST:
4051 case COL_RES_NET_DST:
4052 case COL_UNRES_NET_DST:
4053 switch (cf->cinfo.columns[i+1].col_fmt) {
4055 case COL_DEF_NET_SRC:
4056 case COL_RES_NET_SRC:
4057 case COL_UNRES_NET_SRC:
4058 put_string(line_bufp + buf_offset, " <- ", 4);
4063 put_string(line_bufp + buf_offset, " ", 1);
4070 put_string(line_bufp + buf_offset, " ", 1);
4076 return print_line(print_stream, 0, line_bufp);
4080 print_packet(capture_file *cf, epan_dissect_t *edt)
4082 print_args_t print_args;
4084 if (print_summary || output_fields_has_cols(output_fields)) {
4085 /* Just fill in the columns. */
4086 epan_dissect_fill_in_columns(edt, FALSE, TRUE);
4088 if (print_summary) {
4089 /* Now print them. */
4090 switch (output_action) {
4093 if (!print_columns(cf))
4098 write_psml_columns(edt, stdout);
4099 return !ferror(stdout);
4100 case WRITE_FIELDS: /*No non-verbose "fields" format */
4101 g_assert_not_reached();
4106 if (print_details) {
4107 /* Print the information in the protocol tree. */
4108 switch (output_action) {
4111 /* Only initialize the fields that are actually used in proto_tree_print.
4112 * This is particularly important for .range, as that's heap memory which
4113 * we would otherwise have to g_free().
4114 print_args.to_file = TRUE;
4115 print_args.format = print_format;
4116 print_args.print_summary = print_summary;
4117 print_args.print_formfeed = FALSE;
4118 packet_range_init(&print_args.range, &cfile);
4120 print_args.print_hex = print_hex;
4121 print_args.print_dissections = print_details ? print_dissections_expanded : print_dissections_none;
4123 if (!proto_tree_print(&print_args, edt, output_only_tables, print_stream))
4126 if (!print_line(print_stream, 0, separator))
4132 write_pdml_proto_tree(edt, stdout);
4134 return !ferror(stdout);
4136 write_fields_proto_tree(output_fields, edt, &cf->cinfo, stdout);
4138 return !ferror(stdout);
4142 if (print_summary || print_details) {
4143 if (!print_line(print_stream, 0, ""))
4146 if (!print_hex_data(print_stream, edt))
4148 if (!print_line(print_stream, 0, separator))
4157 switch (output_action) {
4160 return print_finale(print_stream);
4164 write_pdml_finale(stdout);
4166 write_psml_finale(stdout);
4167 return !ferror(stdout);
4170 write_fields_finale(output_fields, stdout);
4171 return !ferror(stdout);
4174 g_assert_not_reached();
4180 cf_open(capture_file *cf, const char *fname, unsigned int type, gboolean is_tempfile, int *err)
4184 char err_msg[2048+1];
4186 wth = wtap_open_offline(fname, type, err, &err_info, perform_two_pass_analysis);
4190 /* The open succeeded. Fill in the information for this file. */
4192 /* Create new epan session for dissection. */
4193 epan_free(cf->epan);
4194 cf->epan = tshark_epan_new(cf);
4197 cf->f_datalen = 0; /* not used, but set it anyway */
4199 /* Set the file name because we need it to set the follow stream filter.
4200 XXX - is that still true? We need it for other reasons, though,
4202 cf->filename = g_strdup(fname);
4204 /* Indicate whether it's a permanent or temporary file. */
4205 cf->is_tempfile = is_tempfile;
4207 /* No user changes yet. */
4208 cf->unsaved_changes = FALSE;
4210 cf->cd_t = wtap_file_type_subtype(cf->wth);
4211 cf->open_type = type;
4213 cf->drops_known = FALSE;
4215 cf->snap = wtap_snapshot_length(cf->wth);
4216 if (cf->snap == 0) {
4217 /* Snapshot length not known. */
4218 cf->has_snap = FALSE;
4219 cf->snap = WTAP_MAX_PACKET_SIZE;
4221 cf->has_snap = TRUE;
4222 nstime_set_zero(&cf->elapsed_time);
4227 cf->state = FILE_READ_IN_PROGRESS;
4229 wtap_set_cb_new_ipv4(cf->wth, add_ipv4_name);
4230 wtap_set_cb_new_ipv6(cf->wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
4235 g_snprintf(err_msg, sizeof err_msg,
4236 cf_open_error_message(*err, err_info, FALSE, cf->cd_t), fname);
4237 cmdarg_err("%s", err_msg);
4242 show_capture_file_io_error(const char *fname, int err, gboolean is_close)
4244 char *save_file_string;
4246 save_file_string = output_file_description(fname);
4251 cmdarg_err("Not all the packets could be written to the %s because there is "
4252 "no space left on the file system.",
4258 cmdarg_err("Not all the packets could be written to the %s because you are "
4259 "too close to, or over your disk quota.",
4264 case WTAP_ERR_CANT_CLOSE:
4265 cmdarg_err("The %s couldn't be closed for some unknown reason.",
4269 case WTAP_ERR_SHORT_WRITE:
4270 cmdarg_err("Not all the packets could be written to the %s.",
4276 cmdarg_err("The %s could not be closed: %s.", save_file_string,
4277 wtap_strerror(err));
4279 cmdarg_err("An error occurred while writing to the %s: %s.",
4280 save_file_string, wtap_strerror(err));
4284 g_free(save_file_string);
4288 show_print_file_io_error(int err)
4293 cmdarg_err("Not all the packets could be printed because there is "
4294 "no space left on the file system.");
4299 cmdarg_err("Not all the packets could be printed because you are "
4300 "too close to, or over your disk quota.");
4305 cmdarg_err("An error occurred while printing packets: %s.",
4312 cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
4316 static char errmsg_errno[1024+1];
4319 /* Wiretap error. */
4322 case WTAP_ERR_NOT_REGULAR_FILE:
4323 errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
4326 case WTAP_ERR_RANDOM_OPEN_PIPE:
4327 /* Seen only when opening a capture file for reading. */
4328 errmsg = "The file \"%s\" is a pipe or FIFO; TShark can't read pipe or FIFO files in two-pass mode.";
4331 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
4332 /* Seen only when opening a capture file for reading. */
4333 errmsg = "The file \"%s\" isn't a capture file in a format TShark understands.";
4336 case WTAP_ERR_UNSUPPORTED:
4337 /* Seen only when opening a capture file for reading. */
4338 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4339 "The file \"%%s\" contains record data that TShark doesn't support.\n"
4341 err_info != NULL ? err_info : "no information supplied");
4343 errmsg = errmsg_errno;
4346 case WTAP_ERR_CANT_WRITE_TO_PIPE:
4347 /* Seen only when opening a capture file for writing. */
4348 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4349 "The file \"%%s\" is a pipe, and \"%s\" capture files can't be "
4350 "written to a pipe.", wtap_file_type_subtype_short_string(file_type));
4351 errmsg = errmsg_errno;
4354 case WTAP_ERR_UNWRITABLE_FILE_TYPE:
4355 /* Seen only when opening a capture file for writing. */
4356 errmsg = "TShark doesn't support writing capture files in that format.";
4359 case WTAP_ERR_UNWRITABLE_ENCAP:
4360 /* Seen only when opening a capture file for writing. */
4361 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4362 "TShark can't save this capture as a \"%s\" file.",
4363 wtap_file_type_subtype_short_string(file_type));
4364 errmsg = errmsg_errno;
4367 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
4369 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4370 "TShark can't save this capture as a \"%s\" file.",
4371 wtap_file_type_subtype_short_string(file_type));
4372 errmsg = errmsg_errno;
4374 errmsg = "The file \"%s\" is a capture for a network type that TShark doesn't support.";
4377 case WTAP_ERR_BAD_FILE:
4378 /* Seen only when opening a capture file for reading. */
4379 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4380 "The file \"%%s\" appears to be damaged or corrupt.\n"
4382 err_info != NULL ? err_info : "no information supplied");
4384 errmsg = errmsg_errno;
4387 case WTAP_ERR_CANT_OPEN:
4389 errmsg = "The file \"%s\" could not be created for some unknown reason.";
4391 errmsg = "The file \"%s\" could not be opened for some unknown reason.";
4394 case WTAP_ERR_SHORT_READ:
4395 errmsg = "The file \"%s\" appears to have been cut short"
4396 " in the middle of a packet or other data.";
4399 case WTAP_ERR_SHORT_WRITE:
4400 errmsg = "A full header couldn't be written to the file \"%s\".";
4403 case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
4404 errmsg = "This file type cannot be written as a compressed file.";
4407 case WTAP_ERR_DECOMPRESS:
4408 /* Seen only when opening a capture file for reading. */
4409 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4410 "The compressed file \"%%s\" appears to be damaged or corrupt.\n"
4412 err_info != NULL ? err_info : "no information supplied");
4414 errmsg = errmsg_errno;
4418 g_snprintf(errmsg_errno, sizeof(errmsg_errno),
4419 "The file \"%%s\" could not be %s: %s.",
4420 for_writing ? "created" : "opened",
4421 wtap_strerror(err));
4422 errmsg = errmsg_errno;
4426 errmsg = file_open_error_message(err, for_writing);
4431 * Open/create errors are reported with an console message in TShark.
4434 open_failure_message(const char *filename, int err, gboolean for_writing)
4436 fprintf(stderr, "tshark: ");
4437 fprintf(stderr, file_open_error_message(err, for_writing), filename);
4438 fprintf(stderr, "\n");
4442 * General errors are reported with an console message in TShark.
4445 failure_message(const char *msg_format, va_list ap)
4447 fprintf(stderr, "tshark: ");
4448 vfprintf(stderr, msg_format, ap);
4449 fprintf(stderr, "\n");
4453 * Read errors are reported with an console message in TShark.
4456 read_failure_message(const char *filename, int err)
4458 cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
4459 filename, g_strerror(err));
4463 * Write errors are reported with an console message in TShark.
4466 write_failure_message(const char *filename, int err)
4468 cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
4469 filename, g_strerror(err));
4473 * Report additional information for an error in command-line arguments.
4476 failure_message_cont(const char *msg_format, va_list ap)
4478 vfprintf(stderr, msg_format, ap);
4479 fprintf(stderr, "\n");
4483 * Editor modelines - https://www.wireshark.org/tools/modelines.html
4488 * indent-tabs-mode: nil
4491 * vi: set shiftwidth=2 tabstop=8 expandtab:
4492 * :indentSize=2:tabSize=8:noTabs=true: